[1] Harvard Med Sch, Dept Otolaryngol Head & Neck Surg, Facial Plast & Reconstruct Surg, Massachusetts Eye & Ear, Boston, MA USA
[2] Univ Zimbabwe, Coll Hlth Sci, Dept Dent, Div Oral & Maxillofacial Surg, Harare, Zimbabwe
[3] Univ Calif Davis, Dept Otolaryngol Head & Neck Surg, Facial Plast & Reconstruct Surg, Sacramento, CA USA
[4] Univ Teaching Hosp Kigali, Dept Surg, Kigali, Rwanda
[5] Univ Rwanda, Coll Med & Hlth Sci, Sch Med & Pharm, Kigali, Rwanda