[26], [27] (See Supplement Text S1 and Table S3). We saw no significant difference in blood type distribution between mild and severe patients by Fisher exact test. (p = 0.446). (Table 1) We also saw no significant associations when ABO allele distribution was analyzed in the following subgroups: males and females, patients with and without asthma, and patients with and without history of meconium ileus. Here, ABO is linked to asthma.