Axel Kornerup Hansen1, Timo Nevalainen2,3, Adrian Smith4, Marianne Jensen-Wärn5, Merel Ritskes-Hoitinga6 & Jann Hau7
1The Royal Veterinary and Agricultural University, Copenhagen, Denmark; 2The Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland; 3University of Kuopio, Kuopio, Finland; 4Norwegian College of Veterinary Medicine. Oslo, Norway; 5The Swedish University of Agricultural Sciences, Uppsala, Sweden; 6University of Odense, Odense, Denmark & 7University of Uppsala, Uppsala, Sweden