KONGSUN CHING, L. V.; LIU, P. L. A. Addressing Difficulty in Communication While Wearing a Respirator Mask During the COVID-19 Pandemic by Using a Laryngophone. Philippine Journal of Otolaryngology Head and Neck Surgery, [S. l.], v. 36, n. 2, p. 49, 2021. Disponível em: https://pjohns.pso-hns.org/index.php/pjohns/article/view/1811. Acesso em: 27 jan. 2022.