Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Iwatsuki Masaaki and Haga Yoshio and Katafuchi Shigeru and Ikei Satoshi and Baba Hideo,Evaluation of Surgical Audit Systems 'POSSUM and P-POSSUM' in Emergency Digestive Surgery,The Japanese Journal of Gastroenterological Surgery,0386-9768,The Japanese Society of Gastroenterological Surgery,2008,41,4,373-379,https://cir.nii.ac.jp/crid/1390001204919074560,https://doi.org/10.5833/jjgs.41.373