Veit H P, Carter G R, Riet-Correa F, Brown S S
Department of Biomedical Sciences and Pathobiology Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, Blacksburg 24061-0442, USA.
Ann N Y Acad Sci. 1996 Jul 23;791:350-8. doi: 10.1111/j.1749-6632.1996.tb53542.x.