Aging is Associated With Constipation in Japanese Patients With Ulcerative Colitis: A Post Hoc Analysis oleh Sen Yagi MD, PhD, Shinya Furukawa MD, PhD, Teruki Miyake MD, PhD, Osamu Yoshida MD, PhD, Kana Shiraishi MD, Kazuhiro Tange MD PhD, Yu Hashimoto MD, PhD, Shogo Kitahata MD, PhD, Tomoyuki Ninomiya MD, PhD, Masakazu Hanayama MD, PhD, Seiyuu Suzuki MD, PhD, Naozumi Shibata MD, PhD, Hidehiro Murakami MD, PhD, Katsuhisa Ohashi MD, PhD, Hideomi Tomida MD, PhD, Yasunori Yamamoto MD, PhD, Eiji Takeshita MD, PhD, Yoshio Ikeda MD, PhD, Yoichi Hiasa MD, PhD