Nam, Nguyen Hoai. “Risk Factors for Prolonged Postparturient Vaginal Discharge in Sows”. The Thai Journal of Veterinary Medicine 50, no. 1 (April 24, 2020): 57–63. Accessed January 25, 2022. https://he01.tci-thaijo.org/index.php/tjvm/article/view/243257.