Perdana, R. F. (2020) “Transnasal Esophagoscopy Examination in Outpatient Unit, Department of Otorhinolaryngology Head and Neck Surgery, Dr. Soetomo Hospital, Surabaya”, Folia Medica Indonesiana, 56(1), pp. 75–81. doi: 10.20473/fmi.v56i1.24616.