1. Bureau of Labor Statistic (BLS) United States Department of Labor. 2012. Available at: http://www.bls.gov/news.release/osh.t01.htm. Accessed May 28, 2014.
2. Health and Safety Authority (HSA), Healthcare illness and injury statistics. 2012. Available at: http://www.hsa.ie/eng/Your_Industry/Healthcare_Sector/Healthcare_Illness_and_Injury_Statistics/healthcare_stats_for_web_2012. Accessed May 28, 2014.
3. WHO, Spotlight on Statistics – A fact file on health workforce statistics. Gender in health workforce. 2008. Available at: http://www.who.int/hrh/statistics/spotlight2/en/. Accessed May 28, 2014.
4. National Academies of Science (NAS). To err is human, building a safer health system;Institute of Medicine (IOM),1999
5. NIOSH (National Institute for Occupational Safety and Health/CDC). A NORA report: state of the sector: healthcare and social assistance, 2009. Available at: http://www.cdc.gov/niosh/docs/2009-139/pdfs/2009-139.pdf. Accessed May 28, 2014.