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European Journal of Surgical Oncology (EJSO) > 2018 > 44 > 4 > 490-495
Polish Journal of Surgery > 2013 > 85 > 9 > 491-495
Comparative Professional Pedagogy > 2013 > 85 > 9 > 491-495
Colorectal Disease > 14 > 8 > e499 - e505
Digestive Diseases and Sciences > 2005 > 50 > 9 > 1722-1728