title: [Etiology of inflammatory bowel disease--lifestyle and environmental risk factors].
authors.affiliation: Department of Preventive Medicine and Public Health, School of Medicine, Keio University.
authors.forename: Keiko
authors.initials: K
authors.lastname: Asakura
mesh_terms: D001062:Appendectomy; D005247:Feeding Behavior; D006801:Humans; D006920:Hygiene; D007239:Infections / Q000150:complications; D015212:Inflammatory Bowel Diseases / Q000139:chemically induced / Q000209:etiology*; D007410:Intestinal Diseases / Q000150:complications; D008019:Life Style; D011183:Postoperative Complications; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects