[1] Univ Ibadan, Dept Pediat, Coll Med, Ibadan, Oyo, Nigeria
[2] Univ Coll Hosp, Ibadan, Oyo, Nigeria
[3] Fed Med Ctr, Dept Paediat, Kastina, Kastina, Nigeria
[4] Univ Ilorin, Dept Pediat, Teaching Hosp, Ilorin, Kwara, Nigeria
[5] Univ Nigeria, Dept Paediat, Ozalla, Enugu, Nigeria
[6] Univ Nigeria, Teaching Hosp, Ozalla, Enugu, Nigeria
[7] Univ Jos, Coll Hlth Sci, Dept Pediat, Jos, Plateau, Nigeria
[8] Rivers State Univ, Teaching Hosp, Coll Med Sci, Fac Clin Sci,Dept Paediat, Port Harcourt, Rivers, Nigeria
[9] Lagos State Univ, Dept Pediat, Teaching Hosp, Lagos, Nigeria
[10] Univ Coll Hosp Ibadan, Univ Coll Hosp, Coll Med, Dept Paediat,Ctr African Newborn Hlth & Nutr, Ibadan, Oyo, Nigeria
[11] Nnamdi Azikiwe Univ, Dept Paediat, Teaching Hosp, Nnewi, Anambra, Nigeria
[12] Univ Coll Hosp, Dept Clin Nursing, Ibadan, Oyo, Nigeria
[13] Sidra Med Al Gharafa, Womens Mental Hlth Div, Doha, Qatar
[14] Fed Med Ctr, Dept Paediat, Lokoja, Nigeria