References
- EMCDDA. European Drug Report 2013: Trends and developments. Available at: http://www.emcdda.europa.eu/publications/edr/trends-developments/2013. (Accessed on April 2014).
- EMCDDA. Risk assessments of various psychoactive substances 1999–2014. Available at: http://www.emcdda.europa.eu/publications/ searchresults?action = list&type = PUBLICATIONS&SERIES_ PUB = w12. (Accessed on April 2014)
- Natsuka K, Nakamura H, Uno H, Umemoto S. Studies on 1-substituted 4-(1,2-diphenylethyl)piperazine derivatives and their analgesic activities. 1. J Med Chem 1975; 18:1240–1244.
- Helander A, Beck O, Hägerkvist R, Hultén P. Identification of novel psychoactive drug use in Sweden based on laboratory analysis - initial experiences from the STRIDA project. Scand J Clin Lab Invest 2013; 73:400–406.
- Helander A, Bäckberg M, Hultén P, Al-Saffar Y, Beck O. Detection of new psychoactive substance use among emergency room patients: Results from the Swedish STRIDA project. Forensic Sci Int 2014; 243:23–29.
- Al-Saffar Y, Stephanson NN, Beck O. Multicomponent LC-MS/MS screening method for detection of new psychoactive drugs, legal highs, in urine-experience from the Swedish population. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 930:112–120.
- Alexander GC, Kruszewski SP, Webster DW. Rethinking opioid prescribing to protect patient safety and public health. JAMA 2012; 308:1865–1866.
- Dowell D, Kunins HV, Farley TA. Opioid analgesics – risky drugs, not risky patients. JAMA 2013; 309:2219–2220.
- Nakamura H, Shimizu M. Comparative study of 1-cyclohexyl-4-(1,2-diphenylethyl)-piperazine and its enantiomorphs on analgesic and othe pharmacological activities in experimental animals. Arch Int Pharmacodyn Ther 1976; 221:105–121.
- https://www.flashback.org/. (Accessed on April 2014)
- Baron M, Elie M, Elie L. An analysis of legal highs: do they contain what it says on the tin? Drug Test Anal 2011; 3:576–581.
- Davies S, Wood DM, Smith G, Button J, Ramsey J, Archer R, et al. Purchasing ‘legal highs’ on the Internet - is there consistency in what you get? QJM 2010; 103:489–493.
- Boyle KL, Rosenbaum CD. Oxymorphone insufflation associated with acute sensorineural hearing loss: case files of the University of Massachusetts medical toxicology fellowship. J Med Toxicol 2013; 9:179–183.
- Christenson BJ, Marjala AR. Two cases of sudden sensorineural hearing loss after methadone overdose. Ann Pharmacother 2010; 44:207–210.
- Friedman RA, House JW, Luxford WM, Gherini S, Mills D. Profound hearing loss associated with hydrocodone/acetaminophen abuse. Am J Otol 2000; 21:188–191.
- Ishiyama A, Ishiyama G, Baloh RW, Evans CJ. Heroin-induced reversible profound deafness and vestibular dysfunction. Addiction 2001; 96:1363–1364.
- Shaw KA, Babu KM, Hack JB. Methadone, another cause of opioid-associated hearing loss: a case report. J Emerg Med 2011; 41:635–639.
- Vorasubin N, Calzada AP, Ishiyama A. Methadone-induced bilateral severe sensorineural hearing loss. Am J Otolaryngol 2013; 34:735–738.
- Starmark JE, Stålhammar D, Holmgren E, Rosander B. A comparison of the Glasgow Coma Scale and the Reaction Level Scale (RLS85). J Neurosurg 1988; 69:699–706