University of Lagos, Nnamdi Azikiwe University - Department of Obstetrics and Gynecology, Nnamdi Azikiwe University, Nnamdi Azikiwe University, Lead City University, Ancilla Eye foundation Hospital, Nnamdi Azikiwe University, Nigerian Institute of Medical Research - Clinical Sciences Department, Nnamdi Azikiwe University, Chukwuemeka Odumegwu Ojukwu University, Massey Street Children's Hospital, Chukwuemeka Odumegwu Ojukwu University, Obafemi Awolowo University, Obafemi Awolowo University, Nnamdi Azikiwe University, University of Nigeria, University of Nigeria and Johns Hopkins University