Retinoblastoma and ABO blood groups.
D000017:ABO Blood-Group System; D005134:Eye Neoplasms / Q000097:blood* / Q000235:genetics; D005787:Gene Frequency; D006801:Humans; D007223:Infant; D012175:Retinoblastoma / Q000097:blood* / Q000235:genetics
D000017:ABO Blood-Group System