title: Risk of vitamin D deficiency rises with breast feeding after age 1, study shows.
authors.affiliation: London.
authors.forename: Susan
authors.initials: S
authors.lastname: Mayor
mesh_terms: D001942:Breast Feeding; D019587:Dietary Supplements; D005260:Female; D006801:Humans; D008297:Male; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000627:therapeutic use*
chemical_list: D014807:Vitamin D