SEIMIYA YM, TAKAHASHI M, FURUKAWA T, MIZUTANI K, KIMURA K, HARITANI M. An Aged Bull with Concurrent Thyroid C Cell Carcinoma, Adrenal Pheochromocytoma and Pituitary Chromophobe Adenoma. The Journal of Veterinary Medical Science. 2009;71(2):225–8. doi: 10.1292/jvms.71.225.