Livesey, John Response to the letter by Bolland et al on defining vitamin D deficiency. [electronic resource] - The New Zealand medical journal Nov 2007 - U2815 p. digital Publication Type: Letter; Comment ISSN: 1175-8716 Subjects--Topical Terms: Dietary SupplementsFemaleHumansTreatment OutcomeVitamin D--administration & dosageVitamin D Deficiency--blood