References
- World Health Organization. Projections of mortality and causes of death, 2015 and 2030. Available from: http://www.who.int/healthinfo/global_burden_disease/projections/en/ [cited 13 July 2015].
- Erb-Downward JR, Thompson DL, Han MK, Freeman CM, McCloskey L, Schmidt LA, etal. Analysis of the lung microbiome in the “healthy” smoker and in COPD. PloS One. 2011; 6(2): e16384.
- Keatings VM, Nightingale JA. Induced sputum: whole sample. Methods Mol Med. 2001; 56: 93–8. [PubMed Abstract].
- Du Rand IA, Blaikley J, Booton R, Chaudhuri N, Gupta V, Khalid S, etal. British Thoracic Society guideline for diagnostic flexible bronchoscopy in adults: accredited by NICE. Thorax. 2013; 68(Suppl 1): i1–i44.
- Hilty M, Burke C, Pedro H, Cardenas P, Bush A, Bossley C, etal. Disordered microbial communities in asthmatic airways. PloS One. 2010; 5(1): e8578.
- Zakharkina T, Heinzel E, Koczulla RA, Greulich T, Rentz K, Pauling JK, etal. Analysis of the airway microbiota of healthy individuals and patients with chronic obstructive pulmonary disease by T-RFLP and clone sequencing. PloS One. 2013; 8(7): e68302.
- PubMed [Internet]. Available from: http://www.ncbi.nlm.nih.gov/pubmed/ .
- EMBASE [Internet]. Available from: http://www.elsevier.com/online-tools/embase..
- U.S. National Library of Medicine. Fact Sheet Medical Subject Headings (MeSH®) 1999 [updated 9 December 2013]. Available from: http://www.nlm.nih.gov/pubs/factsheets/mesh.html [cited 5 January 2015].
- Wikipedia. PICO process: Wikipedia; 2014 [updated 19 May 2014]. Available from: http://en.wikipedia.org/wiki/PICO_process [cited 11 November 2014].
- Chudleigh J, Hoo AF, Ahmed D, Prasad A, Sheehan D, Francis J, etal. Positive parental attitudes to participating in research involving newborn screened infants with CF. J Cyst Fibros. 2013; 12(3): 234–40.
- Kerrison S, Laws S, Cane M, Thompson A. The patient's experience of being a human subject. J R Soc Med. 2008; 101(8): 416–22.
- Kye SH, Tashkin DP, Roth MD, Adams B, Nie WX, Mao JT. Recruitment strategies for a lung cancer chemoprevention trial involving ex-smokers. Contemporary Clin Trials. 2009; 30(5): 464–72.
- Lipman MC, Stobbs D, Madge S, Miller R, Johnson MA. Research bronchoscopies do not adversely affect HIV-infected individuals’ future health-care decisions. Chest. 1998; 114(1): 284–90.
- Mtunthama N, Malamba R, French N, Molyneux ME, Zijlstra EE, Gordon SB. Malawians permit research bronchoscopy due to perceived need for healthcare. J Med Ethics. 2008; 34(4): 303–7.
- Patel D, Akporobaro A, Chinyanganya N, Hackshaw A, Seale C, Spiro SG, etal. Attitudes to participation in a lung cancer screening trial: a qualitative study. Thorax. 2012; 67(5): 418–25.
- Schook RM, Postmus BB, van den Berg RM, Sutedja TG, Man de FS, Smit EF, etal. The finding of premalignant lesions is not associated with smoking cessation in chemoprevention study volunteers. J Thorac Oncol. 2010; 5(8): 1240–5.
- Sohanpal R, Hooper R, Hames R, Priebe S, Taylor S. Reporting participation rates in studies of non-pharmacological interventions for patients with chronic obstructive pulmonary disease: a systematic review. Syst Rev. 2012; 1: 66.
- Khalid-de Bakker C, Jonkers D, Smits K, Mesters I, Masclee A, Stockbrugger R. Participation in colorectal cancer screening trials after first-time invitation: a systematic review. Endoscopy. 2011; 43(12): 1059–86.
- Ellis PM. Attitudes towards and participation in randomised clinical trials in oncology: a review of the literature. Ann Oncol. 2000; 11(8): 939–45.
- Grønseth R, Haaland I, Wiker HG, Martinsen EMH, Leiten EO, Husebø G, etal. The Bergen COPD microbiome study (MicroCOPD): rationale, design, and initial experiences. Eur Clin Respir J. 2014; 1: 26196. doi: http://dx.doi.org/10.3402/ecrj.v1.26196 .