Cardo Denise, Dennehy Penelope H, Halverson Paul, Fishman Neil, Kohn Mel, Murphy Cathryn L, Whitley Richard J
Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, 1600 Clifton Rd., Atlanta, GA 30039, USA.
Am J Infect Control. 2010 Nov;38(9):671-5. doi: 10.1016/j.ajic.2010.09.001.