title: Deficiency diseases of the gastrointestinal tract.
authors.forename: D L
authors.initials: DL
authors.lastname: WILBUR
authors.forename: C D
authors.initials: CD
authors.lastname: ARMSTRONG
mesh_terms: D004046:Dietetics; D004064:Digestive System; D041981:Gastrointestinal Tract; D006801:Humans; D007422:Intestines; D052756:Nutritional Sciences; D009752:Nutritional Status