DELOVINO, K. A. E.; LIM, W. S. An Improvised Tracheotomy Speaking Valve. Philippine Journal of Otolaryngology Head and Neck Surgery, [S. l.], v. 27, n. 2, p. 28–31, 2012. DOI: 10.32412/pjohns.v27i2.529. Disponível em: https://pjohns.pso-hns.org/index.php/pjohns/article/view/529. Acesso em: 21 nov. 2024.