From the Departments of *Anesthesiology and †Orthopedic Surgery, Dartmouth-Hitchcock Medical Center; ‡The Dartmouth Institute, Geisel School of Medicine at Dartmouth, Lebanon, NH; and §Institute for Healthcare Policy and Innovation, School of Nursing, and Institute for Social Research, University of Michigan, Ann Arbor, MI.
Accepted for publication November 30, 2016.
Address correspondence to: Brian D. Sites, MD, MS, Dartmouth-Hitchcock Medical Center, One Medical Center Dr, Lebanon, NH 03756 (e-mail: email@example.com).
The authors declare no conflict of interest.
The Department of Anesthesiology at Dartmouth Medical School provided protected research time for B.D.S. and M.M.M. to support this project.