Villanueva, J. V. M., and R. G. Soriano. “Advanced Laryngotracheal Stenosis in a Tertiary Provincial Government Hospital: A Prospective Case Series”. Philippine Journal of Otolaryngology Head and Neck Surgery, vol. 34, no. 1, June 2019, pp. 30-33, doi:10.32412/pjohns.v34i1.135.