[1] Ctr Hlth Start Initiat, Lagos 101223, Nigeria
[2] NIMS Spectrum Child Dev Res Ctr, NIMS Med, Thiruvananthapuram, Kerala, India
[3] Stellenbosch Univ, Dept Hlth & Rehabil Sci, Div Physiotherapy, Cape Town, South Africa
[4] London Sch Hyg & Trop Med, Int Ctr Evidence Disabil, London, England
[5] Johns Hopkins Med, Div Gen Internal Med, Dept Med, Sch Med, Baltimore, MD USA
[6] Univ Groningen, Univ Med Ctr Groningen, Dept Pediat, Div Dev Neurol, Groningen, Netherlands
[7] Univ Groningen, Fac Theol & Religious Studies, Groningen, Netherlands