Patterns of Simultaneous Polysubstance Use among Partygoers: Correlates and Differences in Adverse Acute Effects Experienced

References

• Baggio, S., J. Studer, M. Mohler-Kuo, J. B. Daeppen, and G. Gmel. 2014. Concurrent and simultaneous polydrug use among young Swiss males: Use patterns and associations of number of substances used with health issues. International Journal of Adolescent Medicine and Health 26 (2):217–24. doi:10.1515/ijamh-2013-0305.
   PubMedGoogle Scholar
• Bao, Y. P., Z. M. Liu, J. H. Li, R. M. Zhang, W. Hao, M. Zhao, J. Shi, J. M. McGoogan, and L. Lu. 2015. Club drug use and associated high‐risk sexual behaviour in six provinces in China. Addiction 110:11–19. doi:10.1111/add.12770.
   PubMed Web of Science ®Google Scholar
• Barratt, M. J., J. A. Ferris, and S. Lenton. 2015. Hidden populations, online purposive sampling, and external validity: Taking off the blindfold. Field Methods 27 (1):3–21. doi:10.1177/1525822X14526838.
   Web of Science ®Google Scholar
• Barrett, S. P., J. Archambault, M. J. Engelberg, and R. O. Pihl. 2000. Hallucinogenic drugs attenuate the subjective response to alcohol in humans. Human Psychopharmacology: Clinical and Experimental 15 (7):559–65. doi:10.1002/1099-1077(200010)15:7<559::AID-HUP230>3.0.CO;2-J.
   PubMed Web of Science ®Google Scholar
• Beselia, A., I. Kirtadze, and D. Otiashvili. 2019. Nightlife and drug use in Tbilisi, Georgia: Results of an exploratory qualitative study. Journal of Psychoactive Drugs 51 (3):247–53. doi:10.1080/02791072.2019.1574997.
   PubMed Web of Science ®Google Scholar
• Brookhuis, K. A., D. de Waard, and N. Samyn. 2004. Effects of MDMA (ecstasy), and multiple drugs use on (simulated) driving performance and traffic safety. Psychopharmacology 173 (3–4):440–45. doi:10.1007/s00213-003-1714-5.
   PubMed Web of Science ®Google Scholar
• Carlson, R. G., R. S. Falck, J. A. McCaughan, and H. A. Siegal. 2004. MDMA/Ecstasy use among young people in Ohio: Perceived risk and barriers to intervention. Journal of Psychoactive Drugs 36 (2):181–89. doi:10.1080/02791072.2004.10399728.
   PubMed Web of Science ®Google Scholar
• Carter, J. L., J. Strang, S. Frissa, R. D. Hayes, S. L. Hatch, and M. Hotopf,, . 2013. Comparisons of polydrug use at national and inner city levels in England: Associations with demographic and socioeconomic factors. Annals of Epidemiology 23:636–45. doi:10.1016/j.annepidem.2013.07.012.
   PubMed Web of Science ®Google Scholar
• Chen, J., J. Liang, X. Lin, Y. Zhang, Y. Zhang, L. Lu, and J. Shi. 2017. Sleep deprivation promotes habitual control over goal-directed control: Behavioral and neuroimaging evidence. Journal of Neuroscience 37 (49):1612–17. doi:10.1523/JNEUROSCI.1612-17.2017.
   Web of Science ®Google Scholar
• Chiauzzi, E., P. DasMahapatra, K. Lobo, and M. J. Barratt. 2013. Participatory research with an online drug forum: A survey of user characteristics, information sharing, and harm reduction views. Substance Use & Misuse 48 (8):661–70. doi:10.3109/10826084.2013.800117.
   PubMed Web of Science ®Google Scholar
• Chinet, L., P. Stephan, F. Zobel, and O. Halfon. 2007. Party drug use in techno nights: A field survey among French-speaking Swiss attendees. Pharmacology Biochemistry and Behavior 86 (2):284–89. doi:10.1016/j.pbb.2006.07.025.
   PubMed Web of Science ®Google Scholar
• Connor, J. P., M. J. Gullo, A. White, and A. B. Kelly. 2014. Polysubstance use: Diagnostic challenges, patterns of use and health. Current Opinion in Psychiatry 27 (4):269–75. doi:10.1097/YCO.0000000000000069.
   PubMed Web of Science ®Google Scholar
• Cummings, C., C. Beard, J. M. Habarth, C. Weaver, and A. Haas. 2019. Is the sum greater than its parts? Variations in substance-related consequences by conjoint alcohol-marijuana use patterns. Journal of Psychoactive Drugs 51 (4):351–59. doi:10.1080/02791072.2019.1599473.
   PubMed Web of Science ®Google Scholar
• Da Silva, D. D., H. Carmo, E. and, and E. Silva. 2013. The risky cocktail: What combination effects can we expect between ecstasy and other amphetamines? Archives of Toxicology 87 (1):111–22. doi:10.1007/s00204-012-0929-9.
   PubMed Web of Science ®Google Scholar
• Dermody, S. S. 2018. Risk of polysubstance use among sexual minority and heterosexual youth. Drug and Alcohol Dependence 192:38–44. doi:10.1016/j.drugalcdep.2018.07.030.
   PubMed Web of Science ®Google Scholar
• Dillman, D. A. 2008. The logic and psychology of constructing questionnaires. In International handbook of survey methodology, ed. E. D. de Leeuw, J. J. Hox, and D. A. Dillman, 161–75. New York: Lawrence Erlbaum Associates.
   Google Scholar
• Downey, L. A., H. Sands, L. Jones, A. Clow, P. Evans, T. Stalder, and A. C. Parrott. 2015. Reduced memory skills and increased hair cortisol levels in recent Ecstasy/MDMA users: Significant but independent neurocognitive and neurohormonal deficits. Human Psychopharmacology: Clinical and Experimental 30 (3):199–207. doi:10.1002/hup.2474.
   PubMed Web of Science ®Google Scholar
• Egan, K. L., M. J. Cox, C. K. Suerken, B. A. Reboussin, E. Y. Song, K. G. Wagoner, and M. Wolfson. 2019. More drugs, more problems? Simultaneous use of alcohol and marijuana at parties among youth and young adults. Drug and Alcohol Dependence 202:69–75. doi:10.1016/j.drugalcdep.2019.07.003.
   PubMed Web of Science ®Google Scholar
• Feise, R. J. 2002. Do multiple outcome measures require p-value adjustment? BMC Medical Research Methodology 2 (1):8. doi:10.1186/1471-2288-2-8.
   PubMedGoogle Scholar
• Fernández-Calderón, D., F. Fernández, S. Ruiz-Curado, A. Verdejo-García, and O. M. Lozano. 2015. Profiles of substance use disorders in patients of therapeutic communities: Link to social, medical and psychiatric characteristics. Drug and Alcohol Dependence 149:31–39. doi:10.1016/j.drugalcdep.2015.01.013.
   PubMed Web of Science ®Google Scholar
• Fernández‐Calderón, F., C. Díaz‐Batanero, M. J. Barratt, and J. J. Palamar. 2019. Harm reduction strategies related to dosing and their relation to harms among festival attendees who use multiple drugs. Drug and Alcohol Review 38 (1):57–67. doi:10.1111/dar.12868.
   PubMed Web of Science ®Google Scholar
• Fernandez-Calderon, F., C. M. Cleland, and J. J. Palamar. 2018. Polysubstance use profiles among electronic dance music party attendees in New York City and their relation to use of new psychoactive substances. Addictive Behaviors 78:85–93. doi:10.1016/j.addbeh.2017.11.004.
   PubMed Web of Science ®Google Scholar
• Fernández-Calderón, F., O. M. Lozano Rojas, I. B. Acedos, A. J. Rojas Tejada, C. V. Giné, E. V. Moragues, and F. González-Saiz. 2012. Efectos asociados al policonsumo de drogas en fiestas rave. Health & Addictions 12:37–59.
   Google Scholar
• Fernández-Calderón, F., O. M. Lozano, C. Vidal, J. G. Ortega, E. Vergara, F. González-Sáiz, and I. Bilbao. 2011. Polysubstance use patterns in underground rave attenders: A cluster analysis. Journal of Drug Education 41 (2):183–202. doi:10.2190/DE.41.2.d.
   PubMed Web of Science ®Google Scholar
• Fernández-Calderón, F., O. M. Lozano-Rojas, A. Rojas-Tejada, I. Bilbao-Acedos, C. Vidal-Giné, E. Vergara-Moragues, and F. González-Saiz. 2014. Harm reduction behaviors among young polysubstance users at raves. Substance Abuse 35 (1):45–50. doi:10.1080/08897077.2013.792760.
   PubMed Web of Science ®Google Scholar
• Fernández-Calderón, F., O. M. Lozano-Rojas, and A. J. Rojas-Tejada. 2013. Raves y consumo de drogas desde una perspectiva epidemiológica y psicosocial: Una revisión bibliográfica sistemática. Adicciones 25 (3):269–79. doi:10.20882/adicciones.55.
   PubMedGoogle Scholar
• Font-Mayolas, S., M. E. Gras, N. Cebrián, A. Salamó, M. Planes, and M. J. Sullman. 2013. Types of polydrug use among Spanish adolescents. Addictive Behaviors 38 (3):1605–09. doi:10.1016/j.addbeh.2012.09.007.
   PubMed Web of Science ®Google Scholar
• Fricker, R. D., and M. Schonlau. 2002. Advantages and disadvantages of Internet research surveys: Evidence from the literature. Field Methods 14 (4):347–67. doi:10.1177/152582202237725.
   Google Scholar
• Gouzoulis-Mayfrank, E., and J. Daumann. 2009. Neurotoxicity of drugs of abuse-the case of methylenedioxy amphetamines (MDMA, ecstasy), and amphetamines. Dialogues in Clinical Neuroscience 11:305.
   PubMedGoogle Scholar
• Hannemann, T. V., L. Kraus, and D. Piontek. 2017. Consumption patterns of nightlife attendees in Munich: A latent-class analysis. Substance Use & Misuse 52 (11):1511–21. doi:10.1080/10826084.2017.1290115.
   PubMed Web of Science ®Google Scholar
• Hernandez-Lopez, C., M. Farré, P. N. Roset, E. Menoyo, N. Pizarro, J. Ortuno, M. Torrens, J. Camí, and R. de la Torre. 2002. 3, 4-Methylenedioxymethamphetamine (ecstasy) and alcohol interactions in humans: Psychomotor performance, subjective effects, and pharmacokinetics. Journal of Pharmacology and Experimental Therapeutics 300 (1):236–44. doi:10.1124/jpet.300.1.236.
   PubMed Web of Science ®Google Scholar
• Iudici, A., G. Castelnuovo, and E. Faccio. 2015. New drugs and polydrug use: Implications for clinical psychology. Frontiers in Psychology 6:267. doi:10.3389/fpsyg.2015.00267.
   PubMed Web of Science ®Google Scholar
• Kalogeraki, S. 2012. On the benefits and constraints of the web-based illicit drug survey. International Journal of Interdisciplinary Social Sciences 6 (5):239–52. doi:10.18848/1833-1882/CGP/v06i05/52079.
   Google Scholar
• Karjalainen, K., K. Kuussaari, K. Kataja, C. Tigerstedt, and P. Hakkarainen. 2017. Measuring concurrent polydrug use in general populations: A critical assessment. European Addiction Research 23 (3):163–69. doi:10.1159/000477802.
   PubMed Web of Science ®Google Scholar
• Kataja, K., J. Törrönen, P. Hakkarainen, P. Koivula, C. Tigerstedt, and S. Hautala. 2019. Combining alcohol with benzodiazepines or psychostimulants. Metaphoric meanings and the concept of control in the online talk of polydrug use. Journal of Psychoactive Drugs 51 (5):473–81. doi:10.1080/02791072.2019.1669845.
   PubMed Web of Science ®Google Scholar
• Kecojevic, A., H. J. Jun, S. L. Reisner, and H. L. Corliss. 2017. Concurrent polysubstance use in a longitudinal study of US youth: Associations with sexual orientation. Addiction 112 (4):614–24. doi:10.1111/add.13681.
   PubMed Web of Science ®Google Scholar
• Kelly, A. B., G. C. Chan, A. White, J. B. Saunders, P. J. Baker, and J. P. Connor. 2014. Is there any evidence of changes in patterns of concurrent drug use among young Australians 18–29 years between 2007 and 2010? Addictive Behaviors 39 (8):1249–52. doi:10.1016/j.addbeh.2014.04.009.
   PubMed Web of Science ®Google Scholar
• Kelly, A. B., T. J. Evans-Whipp, R. Smith, G. C. Chan, J. W. Toumbourou, G. C. Patton, S. A. Hemphill, W. D. Hall, and R. F. Catalano. 2015. A longitudinal study of the association of adolescent polydrug use, alcohol use and high school non‐completion. Addiction 110 (4):627–35. doi:10.1111/add.12829.
   PubMed Web of Science ®Google Scholar
• Kirkpatrick, M. G., E. W. Gunderson, F. R. Levin, R. W. Foltin, and C. L. Hart. 2012. Acute and residual interactive effects of repeated administrations of oral methamphetamine and alcohol in humans. Psychopharmacology 219 (1):191–204. doi:10.1007/s00213-011-2390-5.
   PubMed Web of Science ®Google Scholar
• Kuypers, K. P., E. L. Theunissen, J. H. van Wel, E. B. D. S. F. Perna, A. Linssen, A. Sambeth, B. G. Schultz, and J. G. Ramaekers. 2016. Verbal memory impairment in polydrug ecstasy users: A clinical perspective. PloS One 11 (2):e0149438. doi:10.1371/journal.pone.0149438.
   PubMed Web of Science ®Google Scholar
• Landis, J. R., and G. G. Koch. 1977. The measurement of observer agreement for categorical data. Biometrics 33 (1):159–74. doi:10.2307/2529310.
   PubMed Web of Science ®Google Scholar
• Lee, C. M., J. M. Cadigan, and M. E. Patrick. 2017. Differences in reporting of perceived acute effects of alcohol use, marijuana use, and simultaneous alcohol and marijuana use. Drug and Alcohol Dependence 180:391–94. doi:10.1016/j.drugalcdep.2017.08.029.
   PubMed Web of Science ®Google Scholar
• Leslie, E. M., A. Smirnov, A. Cherney, H. Wells, M. Legosz, R. Kemp, and J. M. Najman. 2017. Simultaneous use of alcohol with methamphetamine but not ecstasy linked with aggression among young adult stimulant users. Addictive Behaviors 70:27–34. doi:10.1016/j.addbeh.2017.01.036.
   PubMed Web of Science ®Google Scholar
• Liakoni, E., P. C. Dolder, K. Rentsch, and M. E. Liechti. 2015. Acute health problems due to recreational drug use in patients presenting to an urban emergency department in Switzerland. Swiss Medical Weekly 145 (w14166):w14166.
   PubMedGoogle Scholar
• Licht, C. L., M. Christoffersen, M. Okholm, L. Damgaard, A. Fink‐Jensen, G. M. Knudsen, and D. Erritzoe. 2012. Simultaneous polysubstance use among Danish 3, 4‐methylenedioxymethamphetamine and hallucinogen users: Combination patterns and proposed biological bases. Human Psychopharmacology: Clinical and Experimental 27 (4):352–63. doi:10.1002/hup.2234.
   PubMed Web of Science ®Google Scholar
• Martin, C. S. 2008. Timing of alcohol and other drug use. Alcohol Research & Health 31:96.
   Web of Science ®Google Scholar
• Matias, J., E. Kalamara, F. Mathis, K. Skarupova, A. Noor, and N. Singleton, European Web Survey on Drugs Group. 2019. The use of multi-national we surveys for comparative analysis: Lessons from the European web survey on drugs. International Journal of Drug Policy 73:235–44. doi:10.1016/j.drugpo.2019.03.014.
   PubMed Web of Science ®Google Scholar
• McCabe, S. E., J. A. Cranford, M. Morales, and A. Young. 2006. Simultaneous and concurrent polydrug use of alcohol and prescription drugs: Prevalence, correlates, and consequences. Journal of Studies on Alcohol 67 (4):529–37. doi:10.15288/jsa.2006.67.529.
   PubMed Web of Science ®Google Scholar
• Measham, F., and K. Moore. 2009. Repertoires of distinction: Exploring patterns of weekend polydrug use within local leisure scenes across the English night time economy. Criminology & Criminal Justice 9 (4):437–64. doi:10.1177/1748895809343406.
   Web of Science ®Google Scholar
• Miller, M. B., J. E. Merrill, A. M. DiBello, and K. B. Carey. 2018. Distinctions in alcohol‐induced memory impairment: A mixed methods study of en bloc versus fragmentary blackouts. Alcoholism: Clinical and Experimental Research 42 (10):2000–10. doi:10.1111/acer.13850.
   PubMed Web of Science ®Google Scholar
• Morley, K. I., M. T. Lynskey, P. Moran, R. Borschmann, and A. R. Winstock. 2015. Polysubstance use, mental health and high-risk behaviours: Results from the 2012 global drug survey. Drug and Alcohol Review 34 (4):427–37. doi:10.1111/dar.12263.
   PubMed Web of Science ®Google Scholar
• Muthén, L. K., and B. O. Muthén. 1998-2012. Mplus user’s guide. 7th ed. Los Angeles, CA: Muthén & Muthén. https://www.statmodel.com/download/usersguide/Mplus%20user%20guide%20Ver_7_r3_web.pdf
   Google Scholar
• Ogeil, R. P., S. M. Rajaratnam, J. G. Phillips, J. R. Redman, and J. H. Broadbear. 2011. Ecstasy use and self-reported disturbances in sleep. Human Psychopharmacology: Clinical and Experimental 26 (7):508–16. doi:10.1002/hup.1233.
   PubMed Web of Science ®Google Scholar
• Owens, J.; Adolescent Sleep Working Group. 2014. Insufficient sleep in adolescents and young adults: An update on causes and consequences. Pediatrics 134 (3):e921–e932. doi:10.1542/peds.2014-1696.
   PubMed Web of Science ®Google Scholar
• Parrott, A. C. 2004. MDMA (3, 4-Methylenedioxymethamphetamine) or ecstasy: The neuropsychobiological implications of taking it at dances and raves. Neuropsychobiology 50 (4):329–35. doi:10.1159/000080961.
   PubMed Web of Science ®Google Scholar
• Parrott, A. C. 2015. Why all stimulant drugs are damaging to recreational users: An empirical overview and psychobiological explanation. Human Psychopharmacology: Clinical and Experimental 30 (4):213–24. doi:10.1002/hup.2468.
   PubMed Web of Science ®Google Scholar
• Parrott, A. C., A. Gibbs, A. B. Scholey, R. King, K. Owens, P. Swann, E. Ogden, and C. Stough. 2011. MDMA and methamphetamine: Some paradoxical negative and positive mood changes in an acute dose laboratory study. Psychopharmacology 215 (3):527–36. doi:10.1007/s00213-011-2184-9.
   PubMed Web of Science ®Google Scholar
• Penning, R., A. McKinney, and J. C. Verster. 2012. Alcohol hangover symptoms and their contribution to the overall hangover severity. Alcohol and Alcoholism 47 (3):248–52. doi:10.1093/alcalc/ags029.
   PubMed Web of Science ®Google Scholar
• Quek, L. H., G. C. Chan, A. White, J. P. Connor, P. Baker, J. B. Saunders, and A. B. Kelly. 2013. Concurrent and simultaneous polydrug use: Latent class analysis of an Australian nationally representative sample of young adults. Frontiers in Public Health 1:61. doi:10.3389/fpubh.2013.00061.
   PubMedGoogle Scholar
• Rehm, J., R. Room, W. van den Brinkt, and L. Kraus. 2005. Problematic drug use and drug use disorders in EU countries and Norway: An overview of the epidemiology. European Neuropsychopharmacology 15 (4):389–97. doi:10.1016/j.euroneuro.2005.04.004.
   PubMed Web of Science ®Google Scholar
• Reyes, J. C., C. M. Pérez, H. M. Colón, D. M. Dowell, and F. Cumsille. 2013. Prevalence and patterns of polydrug use in Latin America: Analysis of population-based surveys in six countries. Review of European Studies 5 (1):10. doi:10.5539/res.v5n1p10.
   Google Scholar
• Rhodes, W. A., R. J. Peters, C. S. Perrino, and S. Bryant. 2008. Substance use problems reported by historically Black college students: Combined marijuana and alcohol use versus alcohol alone. Journal of Psychoactive Drugs 40 (2):201–05. doi:10.1080/02791072.2008.10400631.
   PubMed Web of Science ®Google Scholar
• Rigg, K. K. 2017. Motivations for using MDMA (ecstasy/molly) among African Americans: Implications for prevention and harm-reduction programs. Journal of Psychoactive Drugs 49 (3):192–200. doi:10.1080/02791072.2017.1305518.
   PubMed Web of Science ®Google Scholar
• Salom, C. L., K. S. Betts, G. M. Williams, J. M. Najman, and R. Alati. 2016. Predictors of comorbid polysubstance use and mental health disorders in young adults—a latent class analysis. Addiction 111 (1):156–64. doi:10.1111/add.13058.
   PubMed Web of Science ®Google Scholar
• Sanudo, A., S. Andreoni, and Z. M. Sanchez. 2015. Polydrug use among nightclub patrons in a megacity: A latent class analysis. International Journal of Drug Policy 26 (12):1207–14. doi:10.1016/j.drugpo.2015.07.012.
   PubMed Web of Science ®Google Scholar
• Schierenbeck, T., D. Riemann, M. Berger, and M. Hornyak. 2008. Effect of illicit recreational drugs upon sleep: Cocaine, ecstasy and marijuana. Sleep Medicine Reviews 12 (5):381–89. doi:10.1016/j.smrv.2007.12.004.
   PubMed Web of Science ®Google Scholar
• Schneider, K. E., J. N. Park, S. T. Allen, B. W. Weir, and S. G. Sherman. 2019. Patterns of polysubstance use and overdose among people who inject drugs in Baltimore, Maryland: A latent class analysis. Drug and Alcohol Dependence 201:71–77. doi:10.1016/j.drugalcdep.2019.03.026.
   PubMed Web of Science ®Google Scholar
• Skarupova, K., N. Singleton, J. Matias, and V. Mravcik. 2019. Surveying drug consumption: Assessing reliability and validity of the European web survey on drugs questionnaire. International Journal of Drug Policy 73:228–34. doi:10.1016/j.drugpo.2019.03.005.
   PubMed Web of Science ®Google Scholar
• Smith, G. W., M. Farrell, B. P. Bunting, J. E. Houston, and M. Shevlin. 2011. Patterns of polydrug use in Great Britain: Findings from a national household population survey. Drug and Alcohol Dependence 113 (2–3):222–28. doi:10.1016/j.drugalcdep.2010.08.010.
   PubMed Web of Science ®Google Scholar
• Subbaraman, M. S., and W. C. Kerr. 2015. Simultaneous versus concurrent use of alcohol and cannabis in the national alcohol survey. Alcoholism: Clinical and Experimental Research 39 (5):872–79. doi:10.1111/acer.12698.
   PubMed Web of Science ®Google Scholar
• Taylor, D. J., and A. D. Bramoweth. 2010. Patterns and consequences of inadequate sleep in college students: Substance use and motor vehicle accidents. Journal of Adolescent Health 46 (6):610–12. doi:10.1016/j.jadohealth.2009.12.010.
   PubMed Web of Science ®Google Scholar
• Ter Bogt, T. F. M., and R. C. M. E. Engels. 2005. “Partying” hard: Party style, motives for and effects of MDMA use at rave parties. Substance Use & Misuse 40 (9–10):1479–502. doi:10.1081/JA-200066822.
   PubMed Web of Science ®Google Scholar
• Van Havere, T., S. Tutenges, J. De Maeyer, E. Broekaert, and W. Vanderplasschen. 2015. ‘Keep an eye on your friends, even when you don’t know them’: Drug use and harm reduction in the Goa trance scene in Belgium. Drugs: Education, Prevention and Policy 22:239–47.
   Web of Science ®Google Scholar
• Vera, B., C. Vidal Giné, O. Lozano, and F. Fernández Calderón. 2019. Harm reduction behaviors among polysubstance users who consume ecstasy: Can they reduce the negative consequences? An exploratory study. Drugs: Education, Prevention and Policy 27 (1):49–59.
   Web of Science ®Google Scholar
• Vermunt, J. K., and J. Magidson. 2005. Technical guide for Latent GOLD 4.0: Basic and advanced. Belmont, MA: Statistical Innovations Inc.
   Google Scholar
• Verster, J. C., M. van Schrojenstein Lantman, M. Mackus, A. J. van de Loo, J. Garssen, and A. Scholey. 2018. Differences in the temporal typology of alcohol hangover. Alcoholism: Clinical and Experimental Research 42 (4):691–97. doi:10.1111/acer.13610.
   PubMed Web of Science ®Google Scholar
• Vidal Giné, C., F. Fernández Calderón, and J. López Guerrero. 2016. Patterns of use, harm reduction strategies, and their relation to risk behavior and harm in recreational ketamine users. The American Journal of Drug and Alcohol Abuse 42 (3):358–69. doi:10.3109/00952990.2016.1141211.
   PubMed Web of Science ®Google Scholar