Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp|Department of Medical Informatics, Niigata University Medical and Dental Hospital, Niigata, Japan. nktmr@m12.alpha-net.ne.jp