Lautenbach Ebbing, Babson Andrew, Santana Evelyn, Tolomeo Pam, Black Nicole, Smith Catherine A, Maslow Joel
Division of Infectious Diseases, Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA.
Infect Control Hosp Epidemiol. 2009 Apr;30(4):396-7. doi: 10.1086/596044.