Haley S, Beachy J, Ivaska KK, Slater H, Smith S, Moyer-Mileur LJ. Tactile/kinesthetic stimulation (TKS) increases tibial speed of sound and urinary osteocalcin (U-MidOC and unOC) in premature infants (29-32weeks PMA). Bone. 2012 Oct; 51(4):661-6.