Nathues H, Woeste H, Doehring S, Fahrion A S, Doherr M G, grosse Beilage E
Field Station for Epidemiology, University of Veterinary Medicine Hannover, Foundation, Buescheler Street 9, 49456 Bakum, Germany.
Vet Rec. 2012 Jun 16;170(24):623. doi: 10.1136/vr.100817. Epub 2012 May 29.