GSTM1 and thalassemia: Between 2015 and 2019, most SCD births were of the subtype hemoglobin (Hb) SS or HbSβ0 thalassemia (38/65, 58.5%), followed by HbSC (14/65, 21.5%), then HbSβ+ thalassemia (10/65, 15.4%) and other subtypes (3/65, 4.6%)