Otsen M, Plas M E, Groeneveld J, Roos M H, Lenstra J A, Hoekstra R
Institute of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, Utrecht, 3584 CL, The Netherlands.
Exp Parasitol. 2000 Jul;95(3):226-9. doi: 10.1006/expr.2000.4532.