Belluzzi S, Galeotti M, Eutizi C M, Castagnetti C
Veterinary Clinical Department--Obstetrical and Gynaecological Section--Faculty of Veterinary Medicine, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano Emilia, Bologna, Italy.
Vet Res Commun. 2004 Aug;28 Suppl 1:165-8. doi: 10.1023/b:verc.0000045397.58562.6b.