title: Classical hemophilia a study of 236 cases from 212 unrelated families).
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006395:Hemarthrosis / Q000209:etiology; D006406:Hematoma / Q000209:etiology; D006417:Hematuria / Q000209:etiology; D006467:Hemophilia A / Q000150:complications* / Q000175:diagnosis; D006801:Humans; D007223:Infant; D008297:Male