1. From the Departments of Pediatrics (Ta.K., T.I., M.T., Y.K., H.T., K.N., N.I., M.N., Y.H., Y.A., S.N.) and Medical Informatics (H.S.), National Defense Medical College, Saitama; Department of Pediatrics, Gunma University Graduate School of Medicine, Gunma (Toh.K.); Department of Cardiology, Gunma Children's Medical Center, Gunma (Tom.K.); and Department of Education, Ibaraki University, Ibaraki, Japan (S.T.).