[1] Boston Univ, Med Ctr, Dept Radiol, Boston, MA 02118 USA
[2] Univ Erlangen Nurnberg, Dept Radiol, Erlangen, Germany
[3] CCBR SYNARC Inc, San Francisco, CA 94105 USA
[4] Univ Calif Berkeley, Dept Mol & Cell Biol, Berkeley, CA 94720 USA
[5] Univ Calif Berkeley, Ctr Integrat Genom, Berkeley, CA 94720 USA
[6] Klinikum Augsburg, Dept Radiol, D-86156 Augsburg, Germany
[7] Boston Univ, Quantitat Imaging Ctr, Sch Med, Boston, MA 02118 USA
[8] Univ Calif San Francisco, Osteoporosis & Arthrit Res Grp, San Francisco, CA 94117 USA
[9] Sligo Gen Hosp, Dept Radiol, Sligo, Ireland
[10] Univ Michigan, Sch Med, Dept Radiol, Musculoskeletal Div,Osteoporosis & Arthrit Lab, Ann Arbor, MI 48109 USA