1. Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata City, Japan
2. Department of Medical Informatics, Niigata University Medical and Dental Hospital, Division of Pediatrics, Department of Homeostatic Regulation and Development, Niigata Graduate School of Medical and Dental Sciences, Niigata University, Niigata City, Japan
3. Department of Nursing, Niigata Seiryo University, Niigata City, Japan