GSTM1 and Decreased total leukocyte count: Anaemia was diagnosed by Hb < 12 g/dl for non-pregnant females and Hb < 13 g/dl for males [40], while PLT count < 150 × 109/l and WBC count < 4.0 × 109/l were used respectively to determine thrombocytopenia and leukopenia [41].