[1] First On Call Initiat, Community & Clin Res Div, Kharkiv, Kharkiv Oblast, Ukraine
[2] Asokoro Dist Hosp, Dept Internal Med, Abuja, Nigeria
[3] Gen Hosp, Dept Surg, Nri, Nigeria
[4] London Sch Hyg & Trop Med, Dept Publ Hlth, London, England
[5] Act4Her Hlth Initiat, Dept Sexual & Reprod Hlth Res, Yenagoa, Nigeria
[6] Univ Thessaly, Dept Publ Hlth & Maritime Transport, Volos, Greece
[7] Bayero Univ, Dept Med & Surg, Kano, Nigeria
[8] Siberian State Med Univ, Tomsk, Russia
[9] Nnamdi Azikiwe Univ, Dept Pharmaceut & Med Chem, Awka, Nigeria