Sinclair Ryan, Boone Stephanie A, Greenberg David, Keim Paul, Gerba Charles P
Department of Soil, Water and Environmental Science, University of Arizona, Tucson, Arizona 85721, USA.
Appl Environ Microbiol. 2008 Feb;74(3):555-63. doi: 10.1128/AEM.02167-07. Epub 2007 Dec 7.