OKANO, S., K. Nishi, K. Maeda, and S. Iwai. “Pyometra With Irreducible Inguinal Herniation of Both Uterine Horns and Ovaries in a Boston Terrier Dog”. Journal of Advanced Veterinary Research, vol. 11, no. 1, Jan. 2021, pp. 54-56, https://advetresearch.com/index.php/AVR/article/view/640.