GRASP cortical volumetric bone mineral density (bmd), cystatin c in serum, femoral neck areal bone mineral density (bmd), femoral neck bone mineral density (bmd) (females), infant head circumference, lumbar spine areal bone mineral density (bmd), lumbar spine bone mineral density (bmd) (female), lumbar spine bone mineral density (bmd) (male), lumbar spine bone mineral density (bmd), supt3h gene expression in adipose tissue, supt3h gene expression in whole blood