title: Study design of an investigation of lactose maldigestion.
authors.forename: N D
authors.initials: ND
authors.lastname: Barnard
mesh_terms: D000328:Adult; D002118:Calcium / Q000008:administration & dosage; D003611:Dairy Products; D005260:Female; D006801:Humans; D007787:Lactose Intolerance / Q000208:ethnology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D012107:Research Design
chemical_list: D002118:Calcium