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, vol. 10, no. 3, Sept. 2018, p. 319, doi:10.58292/ct.v10.10021.