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Tetsuji YAMAGUCHI, Kazumaro YAMAZAKI, Hideki ARAI, Takuma FUKUDA, Takuya NAGATA. "A Rare Case of Periproctal Abscess due to Penetration of a Sigmoid Colon Diverticulum in a Patient Presenting with Anal Pain." Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 78.8 (2017) 1866-1870