1. Department of Pediatrics (H.I., J.N., R.I., H.S., H.T., R.W., C.Y., A.U., K.U., M.H., K.H., H.N., S.K., K.O.), Osaka University Graduate School of Medicine, Japan.
2. Department of Pediatrics, Niigata University School of Medicine, Japan (H.T.).
3. Department of Pediatrics and Neonatology, Osaka General Medical Center, Japan (S.K.).
4. Department of Cardiology (Y.K., Y.M., Y.A.), Osaka University Graduate School of Medicine, Japan.
5. Department of Genome Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan (Y.A.).