Hart C A, Beeching N J, Duerden B I
School of Tropical Medicine and Department of Medical Microbiology and Genito-urinary Medicine, University of Liverpool, PO Box 147, Liverpool L69 3GA and *Department of Medical Microbiology and Public Health Laboratory, University of Wales College of Medicine, Heath Park, Cardiff CF14 4XN.
J Med Microbiol. 2000 Nov;49(11):947-967. doi: 10.1099/0022-1317-49-11-947.