[1] Fatima Coll Hlth Sci, Pharm Dept, Al Ain, U Arab Emirates
[2] Uppsala Univ, Dept Publ Hlth & Caring Sci, Uppsala, Sweden
[3] Sudanese Med Res Assoc, Med Res Off, Pharm Dept, Khartoum, Sudan
[4] Omdurman Islamic Univ, Fac Pharm, Khartoum, Sudan
[5] Univ Ibadan, Fac Pharm, Ibadan, Nigeria
[6] London Sch Hyg & Trop Med, Dept Global Hlth & Dev, London, England