Mangram A J, Horan T C, Pearson M L, Silver L C, Jarvis W R
Hospital Infections Program, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Public Health Service, US Department of Health and Human Services, Atlanta, GA 30333, USA.
Infect Control Hosp Epidemiol. 1999 Apr;20(4):250-78; quiz 279-80. doi: 10.1086/501620.