title: Letter to the editor.
authors.affiliation: Nutrition and Bone Health Medical Research Council Human Nutrition Research Cambridge UK.
authors.forename: K A
authors.initials: KA
authors.lastname: Ward
authors.forename: A
authors.initials: A
authors.lastname: Riddell
authors.forename: A
authors.initials: A
authors.lastname: Prentice
mesh_terms: D015519:Bone Density / Q000502:physiology*; D003550:Cystic Fibrosis / Q000473:pathology*; D005260:Female; D050723:Fractures, Bone / Q000473:pathology*; D006801:Humans; D008297:Male; D011884:Radius / Q000473:pathology*; D013977:Tibia / Q000473:pathology*