Lüthi B, Huttner A, Speck R F, Mueller N J
Department of Internal Medicine, Division of Infectious Diseases and Hospital Epidemiology, University Hospital of Zurich, Raemistrasse 100/RAE U 74, 8091, Zurich, Switzerland.
Eur J Clin Microbiol Infect Dis. 2007 May;26(5):367-9. doi: 10.1007/s10096-007-0293-5.