To remove or not remove? Twenty or more sewing needles in the gastrointestinal tract. Issue 4 (19th May 2014) - Yamaguchi, Yoshimichi; Terashima, Mariko; Nakao, Atsunori; Yoshie, Norichika; Fujisaki, Noritomo; Yamada, Taihei; Okamoto, Ayana; Hashimoto, Atsunori; Kotani, Joji