van den Boom R, Veldhuis Kroeze E J B, Klein W R, Houwers D J, van der Zanden A G M, Sloet van Oldruitenborgh-Oosterbaan M M
Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.
J Vet Intern Med. 2008 Jul-Aug;22(4):1056-60. doi: 10.1111/j.1939-1676.2008.0104.x.