[1] Helen Hayes Hosp, Reg Bone Ctr, W Haverstraw, NY USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[3] McMaster Univ, St Josephs Hosp, Hamilton, ON, Canada
[4] Univ Cincinnati, Bone Hlth & Osteoporosis Ctr, Cincinnati, OH USA
[5] Univ Alabama, Birmingham, AL USA
[6] Univ Cambridge, Sch Clin Med, Cambridge, England
[7] UMASS Med Sch, Worcester, MA USA
[8] Columbia Univ, Med Ctr, New York, NY USA