References
- Kohn , L T , Corrigan , J M and Donaldson , M S . 1999 . To err is human: building a safer health system , Washington, DC : National Academy Press . http://books.nap.edu/html/to_err_is_human(April 11, 2002)
- Shojania , K G , Duncan , B W McDonald , K M . 2001 . Making health care safer: a critical analysis of patient safety practices Rockville, MD Evidence Report/Technology Assessment No. 43. AHRQ Publication No. 01-E058http://www.ahcpr.gov/clinic/ptsafety/spotlight.htm(April 11, 2002)