aDepartment of Health Sciences, University of York, York, United Kingdom
bDepartment of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
cResearch Institute for Primary Care and Health Sciences, Keele University, Keele, United Kingdom
dDepartment of Primary Care, University of Southampton, Southampton, United Kingdom
eInstitute of General Practice, Technische Universität München, München, Germany
fGroup Health Research Institute, Seattle, WA, USA
gInstitute for Complementary and Integrative Medicine, University Hospital Zurich, University of Zurich, Zurich, Switzerland
hInstitute for Social Medicine, Epidemiology and Health Economics, Charité—Universitätsmedizin, Berlin, Germany
iCenter for Integrative Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
*Corresponding author. Address: Department of Health Sciences, University of York, York YO10 5DD, United Kingdom. Tel.: 44+(0)1904 321394. E-mail address: hugh.macpherson@york.ac.uk (H. MacPherson).
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Members of the Acupuncture Trialists' Collaboration are listed in the acknowledgements at the end of the article.
