GSTM1 and sickle cell disease: Indication for surgery among those transfused were placenta praevia (9 patients) who had 21 units of blood, Cephalo-pelvic disproportion (8 patients) with 13 units, previous caesarian section (4 patients) with 10 units, Sickle cell disease Hb SS (3 patients) with 7 units while eclampsia and fetal distress accounted for 2 patients who had transfusion with 4 and 3 units respectively.