Low body mass index is an important risk factor for low bone mass and increased bone loss in early postmenopausal women. Early Postmenopausal Intervetion Cohort (EPIC) study group. - Ravn,P.; Cizza,G.; Bjarnadon,N.H.; Thompson,D.; Daley,M.; Wasnich,R.D.; McClung,M.; Hosking,D.; Yates,A.J.; Christiansen,C. (J Bone Min Res, 1999)