From the ∗Brigham and Women’s Hospital, Boston

†Harvard Medical School, Boston

‡Eastern Research Group, Lexington, Massachusetts

§Keck School of Medicine, University of Southern California, Los Angeles, California

∥Massachusetts General Hospital, Boston, Massachusetts

¶Department of Orthopaedic Surgery, Duke University, Durham North Carolina.

Correspondence: Patricia C. Dykes, RN, PhD, Brigham and Women’s Hospital, 1620 Tremont Street, Boston, MA 02120 (e-mail: [email protected]).

The authors disclose no conflict of interest.

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