Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Okuno Masayuki and Hatano Etsuro and Nakamura Kojiro and Kasai Yosuke and Nishio Takahiro and Seo Satoru and Taura Kojiro and Mori Akira and Kaido Toshimi and Uemoto Shinji,External Validation of a Nomogram Predicting Disease-free Survival after Curative Resection of Liver Metastasis from Colorectal Cancer,The Japanese Journal of Gastroenterological Surgery,0386-9768,The Japanese Society of Gastroenterological Surgery,2014,47,9,467-476,https://cir.nii.ac.jp/crid/1390282679894524160,https://doi.org/10.5833/jjgs.2013.0198