BICKLE, I. C. Pyriform Sinus Fistula. Philippine Journal of Otolaryngology Head and Neck Surgery, [S. l.], v. 29, n. 1, p. 33–34, 2014. DOI: 10.32412/pjohns.v29i1.463. Disponível em: https://pjohns.pso-hns.org/index.php/pjohns/article/view/463. Acesso em: 23 apr. 2024.