Ruetten , H., K. Wegner, S. Colopy, H. Zhang, S. Sandhu, M. Romero, and C. Vezina. “Impact of Age and Castration on Canine Prostate Collagen Organization ”. Clinical Theriogenology 10, no. 3 (September 1, 2018): 319. Accessed March 26, 2026. https://clinicaltheriogenology.net/index.php/CT/article/view/10021.