title: Clinical multicenter studies on surgical infections caused by Bacteroides fragilis.
authors.affiliation: Third Department of Surgery, Nihon University School of Medicine, 2-11-16, Kanda surugadai, Chiyoda-Ku, Tokyo 1010062, Japan.
authors.forename: Issei
authors.initials: I
authors.lastname: Nakayama
authors.forename: Emiko
authors.initials: E
authors.lastname: Yamaji