Govaere J, Vercauteren G, Coopmans C, Hoogewijs M, De Schauwer C, Smits K, de Kruif A
Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium.
Vet Rec. 2011 Jan 8;168(1):22. doi: 10.1136/vr.c5058. Epub 2010 Dec 14.