About the Authors

Beverley J. Shea

To whom correspondence should be addressed. E-mail: bshea@ciet.org

Affiliations Community Information and Epidemiological Technologies (CIET), Ottawa, Ontario, Canada, Institute for Research in Extramural Medicine (EMGO Institute), Vrije Universiteit (VU) University Medical Center, Amsterdam, The Netherlands

Lex M. Bouter

Affiliation Executive Board, Vrije Universiteit (VU) University Amsterdam, Amsterdam, The Netherlands

Joan Peterson

Affiliation Clinical Epidemiology Program, Ottawa Health Research Institute, University of Ottawa, Ontario, Canada

Maarten Boers

Affiliation Department of Clinical Epidemiology and Biostatistics, Vrije Universiteit (VU) University Medical Center, Amsterdam, The Netherlands

Neil Andersson

Affiliations Community Information and Epidemiological Technologies (CIET), Ottawa, Ontario, Canada, Centro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de Guerrero, Acapulco, Mexico

Zulma Ortiz

Affiliation Epidemiological Research Institute, National Academy of Medicine, Buenos Aires, Argentina

Tim Ramsay

Affiliation Clinical Epidemiology Program, Ottawa Health Research Institute, University of Ottawa, Ontario, Canada

Annie Bai

Affiliation Canadian Agency for Drugs and Technologies in Health (CADTH), Ottawa, Ontario, Canada

Vijay K. Shukla

Affiliation Canadian Agency for Drugs and Technologies in Health (CADTH), Ottawa, Ontario, Canada

Jeremy M. Grimshaw

Affiliation Clinical Epidemiology Program, Ottawa Health Research Institute, University of Ottawa, Ontario, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JG MB BS NA LB. Performed the experiments: ZO JP VS AB. Analyzed the data: BS TR. Wrote the paper: ZO JG MB BS LB. Other: Designed the study: JS. Wrote the first draft of the paper: BS.