Milstone Aaron M, Budd Alicia, Shepard John W, Ross Tracy, Aucott Susan, Carroll Karen C, Perl Trish M
Department of Pediatrics, Divisions of Pediatric Infectious Diseases, Johns Hopkins University School of Medicine, and the Johns Hopkins Hospital, Baltimore, Maryland 21287, USA.
Infect Control Hosp Epidemiol. 2010 May;31(5):558-60. doi: 10.1086/652449.