[1] Providence Portland Med Ctr, Portland, OR USA
[2] New Mexico Clin Res & Osteoporosis Ctr, Albuquerque, NM USA
[3] Radiant Res, Dallas, TX USA
[4] Bethesda Hlth Res Ctr, Bethesda, MD USA
[5] Atlanta Res Ctr, Decatur, GA USA
[6] OB GYN Associates Mid Florida, Leesburg, FL USA
[7] Indiana Univ, Sch Med, Indianapolis, IN USA
[8] Colorado Ctr Bone Res, Lakewood, CO USA
[9] Radiant Res, Lake Worth, FL USA
[10] Univ Washington, Med Ctr, Seattle, WA 98195 USA
[11] Arthrit Associates & Osteoporosis Ctr Colorado Sp, Colorado Springs, CO USA
[12] Altoona Ctr Clin Res, Duncansville, PA USA
[13] Amgen Corp, Thousand Oaks, CA 91320 USA