[OB8] Identification by diagnosis-related codes and diagnosis-date using receipt-database

*Saki Takeshita¹, Yuichi Nishioka¹, Shinichiro Kubo¹, Tomoya Myojin¹, Tatsuya Noda¹, Tomoaki Imamura¹ (1. Department of Public Health, Health Management and Policy, Nara Medical University)