Kim, Kihoon. “Concurrent Hiatal Hernia and Megaesophagus Secondary to a Nasopharyngeal Polyp in a 6-Month-Old Cat”. Acta Scientiae Veterinariae 49 (January 1, 2021). Accessed July 13, 2025. https://seer.ufrgs.br/index.php/ActaScientiaeVeterinariae/article/view/116433.