BCL11A and hydrops fetalis: We disaggregated the patient sample, based on the HbF assessment technique (ADT vs HPLC), and found that the significant associations with HF levels, examined independently, were present in both sub-groups studied using the different assay methods, in rs11886868 (BCL11A), rs4671393 (BCL11A), rs28384513 (HMIP 1) and rs9494142 (HMIP 2) (Table S2).