 American Academy of Orthopaedic Surgeons |
 American Medical Association |
 American Society of Surgery of the Hand |
 American Sports Medicine Institute |
 Arthritis Foundation |
 BlueCross/BlueShield |
 drkoop.com |
 Emedicine |
 Harvard Pilgrim Health Care |
 Health Grades |
 Knee1.com |
 National Athletic Trainers Association |
 National Library of Medicine |
 National Osteoporosis Foundation |
 Shoulder1.com |
 Spine Health |
 Spine Universe |
 Stryker Howmedica Osteonics |
 Suparz Joing Fluid Therapy |
 Synvisc |
 Tufts |
 Winchester Hospital |
