[1] Spaulding Rehabil Hosp, Dept Phys Med & Rehabil, Boston, MA 02114 USA
[2] Harvard Univ, Sch Med, Boston, MA USA
[3] Brigham & Womens Hosp, Dept Orthopaed Surg, Boston, MA 02115 USA
[4] Harvard Univ, Sch Med, Harvard Shoulder Serv, Boston, MA USA
[5] Brigham & Womens Hosp, Orthoped & Arthrit Ctr Outcomes Res, Boston, MA 02115 USA
[6] Brigham & Womens Hosp, Dept Rehabil, Boston, MA 02115 USA
[7] Brigham & Womens Hosp, Div Rheumatol Immunol & Allergy, Boston, MA 02115 USA