Prakken B J, van der Zee R, Anderton S M, van Kooten P, Kuis W, van Eden W
Department of Infectious Diseases and Immunology, Faculty of Veterinary Science, Utrecht, The Netherlands.
Ann N Y Acad Sci. 1996 Feb 13;778:425-6. doi: 10.1111/j.1749-6632.1996.tb21163.x.