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Techniques in Coloproctology > 2003 > 7 > 3 > 133-137
European Journal of Cancer > 1996 > 32 > 10 > 1815-1818
Techniques in Coloproctology > 2003 > 7 > 3 > 133-137
European Journal of Cancer > 1996 > 32 > 10 > 1815-1818