Abstract
1 Division of Gastroenterology-Hepatology and Nutrition, Department of Medicine, University of Utah, 30N 1900E, Salt Lake City, UT 84132, USA
2 Department of Biology, Kunming Teacher's College, Kunming, Yunnan, PR China
3 Guangzhou Blood Center, Guangzhou, Guangdong, PR China
4 Micropathology Ltd, University of Warwick Science Park, Coventry, UK
5 University of Georgia, Athens, GA, USA
6 Institut national de santé publique du Québec, Laboratoire de santé publique du Québec, Sainte-Anne-de-Bellevue, QC, Canada