[1] Aga Khan Univ, Dept Family Med, POB 38129, Dar Es Salaam 38129, Tanzania
[2] Premier Care Clin Masaki, Dept Family Med, POB 220, Dar Es Salaam, Tanzania
[3] Aga Khan Univ, Dept Gen Surg, POB 38129, Dar Es Salaam, Tanzania
[4] Aga Khan Univ, Dept Obstet & Gynecol, POB 2289, Dar Es Salaam, Tanzania