[PB-21] Report of in-house production of hospital information system construction and implementation

*SHUHEI IIDA^1,2,3, Hiroshi Hori^1,3, Keiko Koyano^1,2,3 (1. Tokyo Healthcare Foundation Dept. of Information Quality Management(Quality Assurance Division), 2. Tokyo Healthcare Foundation Institute of Healthcare Quality Improvement, 3. Tokyo Healthcare Foundation Nerima General Hospital)