%0 Journal Article %T Relationship Between Bone, Fracture, and Exercise: The Key Role of Vitamin D—Reply %A Bischoff-Ferrari, Heike A. %A Willett, Walter C. %A Wong, John B. %A Stuck, Andreas E. %A Staehelin, Hannes B. %A Orav, E. John %A Thoma, Anna %A Kiel, Douglas P. %A Henschkowski, Jana %J Archives of Internal Medicine %V 169 %N 17 %P 1633-1638 %@ 0003-9926 %D 2009-09-28 %I American Medical Association %~ DeepDyve