GSTM1 and thalassemia: In addition, 1 case was EE (homozygous Hb E with or without α-thalassemia, 31 cases were EA (30 cases were Hb E trait, 1 case was Hb E trait with or without α-thalassemia), one case was A2A Bart’s H (Hb H disease α-thalassemia 1/α-thalassemia 2), and one case was A2A with abnormal Hb (MCV = 73.4lf, positive OF, positive DCIP, 46.0%HbAo, 3.0%HbA2/E, 0.5%HbF, A2A abnormal Hb, and negative for alpha-thalassemia (SEA and Thai deletion).