[1
]
Division of Otorhinolaryngology, Faculty of Health Sciences, University of Cape Town,
Cape Town, South Africa.
[2
]
Uganda Cancer Institute, Kampala, Uganda.
[3
]
Department of Otorhinolaryngology, University College Hospital, University of Ibadan,
Ibadan, Nigeria.
[4
]
Department of Otolaryngology, Université Assane Seck, Ziguinchor, Senegal.
[5
]
Department of Otolaryngology, Komfo Anokye Teaching Hospital, Kumasi, Ghana.
[6
]
College of Medicine and Health Sciences, Bahir Dar University, Bahir Dar, Ethiopia.
[7
]
Department of Surgery, University of Nairobi, Nairobi, Kenya.
[8
]
Department of Otolaryngology, Korle Bu Teaching Hospital, Accra, Ghana.
[9
]
Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.