1. Makary MA, Daniel M. Medical error—the third leading cause of death in the US. BMJ. 2016;353:i2139.
2. Kohn LT, Corrigan JM, Donaldson MS (Institute of Medicine). To err is human: building a safer health system. Washington, DC: National Academy Press; 2000.
3. Golladay, Kevin R, Collins, A. Blaine. Dallas (TX): Adverse events in hospitals: national incidence among Medicare beneficiaries. Department of Health and Human Services (US); 2010. p. 81. Report number: OEI-06-09-00090.
4. Moder D, Liberati A, Tetzlaff J, Altman DG. The PRISMA Group Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med. 2009;6(7):e1000097.
5. Noyes J, Booth A, Hannes K, Harden A, Harris J, Lewin S, Lockwood C, editors. Supplementary guidance for inclusion of qualitative research in cochrane systematic reviews of interventions. Version 1 (updated August 2011). Cochrane Collaboration Qualitative Methods Group, 2011. Chapter 4, Critical appraisal of qualitative research.