Foma, W., B. Amana, E. Pegbessou, H. Bissa, S. Adam, W. Dolou, T. Darré, E. Boko, and E. Kpemissi. “Upper Aero Digestive Tract Cancers: Epidemiological and Histopathological Aspects in Togo”. International Journal of Otorhinolaryngology and Head and Neck Surgery, vol. 3, no. 1, Dec. 2016, pp. 11-16, doi:10.18203/issn.2454-5929.ijohns20164803.