Probst C, Gethmann J M, Petermann H J, Neudecker J, Jacobsen K, Conraths F J
Friedrich-Loeffler-Institut, Department of Epidemiology, Seestrasse 55, Wusterhausen 16868, Germany.
Vet Rec. 2012 Dec 15;171(24):624. doi: 10.1136/vr.100774. Epub 2012 Nov 10.