1 The Dartmouth Institute for Health Policy and Clinical Practice, Williamson Translational Research Building, 1 Medical Center Drive, Lebanon, NH 03766, USA; Palmer College of Chiropractic, Palmer Center for Chiropractic Research, Davenport, IA, USA. Electronic address: firstname.lastname@example.org.
2 Spine Care Partners, Rochester, NY, USA.
3 Spine Care Partners, Rochester, NY, USA; Excellus Blue Cross Blue Shield, Rochester, NY, USA.
4 Clinical Excellence Research Center, Stanford University School of Medicine, Palo Alto, CA, USA.