[1] Univ Lagos, Coll Med, Fac Clin Sci, Dept Surg, Lagos, Nigeria
[2] Univ Lagos, Dept Surg, Paediat Surg Unit, Teaching Hosp, Lagos, Nigeria
[3] Nationwide Childrens Hosp, Columbus, OH USA
[4] McGill Univ, Dept Pediat Surg, Ctr Hlth, Montreal, PQ, Canada
[5] Univ Lagos, Coll Med, Dept Nursing, Paediat Surg Unit,Teaching Hosp, Lagos, Nigeria
[6] Univ Lagos, Dept Nursing, Coll Med, Lagos, Nigeria
[7] Univ Lagos, Coll Med, Fac Clin Sci, Dept Community Hlth & Primary Care, Lagos, Nigeria
[8] Univ Lagos, Dept Surg, Neurosurg Unit, Teaching Hosp, Lagos, Nigeria
[9] Univ Lagos, Coll Med, Dept Obstet & Gynaecol, Lagos, Nigeria
[10] Univ Lagos, Teaching Hosp, Lagos, Nigeria
[11] Univ Lagos, Dept Orthopaed & Trauma, Teaching Hosp, Lagos, Nigeria
[12] Univ Lagos, Dept Surg, Gen Surg Unit, Teaching Hosp, Lagos, Nigeria
[13] Adams Cowley Shock Trauma Ctr, Baltimore, MD USA
[14] Univ Maryland Med Syst, Baltimore, MD USA
[15] Univ Minnesota, Minneapolis, MN USA
[16] Duke Univ, Duke Global Hlth Inst, Dept Surg, Durham, NC USA
[17] Univ Edinburgh, Dept Surg, Edinburgh, Scotland