Authors: H A Bischoff-Ferrari; B Dawson-Hughes; H B Staehelin; J E Orav; A E Stuck; R Theiler; J B Wong; A Egli; D P Kiel; J Henschkowski Journal: BMJ Date: 2009-10-01
Authors: Suzanne G Leveille; Richard N Jones; Dan K Kiely; Jeffrey M Hausdorff; Robert H Shmerling; Jack M Guralnik; Douglas P Kiel; Lewis A Lipsitz; Jonathan F Bean Journal: JAMA Date: 2009-11-25 Impact factor: 56.272