About the Authors

Geert-Jan Geersing

Contributed equally to this work with: Geert-Jan Geersing, Walter Bouwmeester

g.j.geersing@umcutrecht.nl

Affiliation Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands

Walter Bouwmeester

Contributed equally to this work with: Geert-Jan Geersing, Walter Bouwmeester

Affiliation Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands

Peter Zuithoff

Affiliation Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands

Rene Spijker

Affiliations Medical Library Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, Dutch Cochrane Center, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

Mariska Leeflang

Affiliations Department of Clinical Epidemiology and Bio-Informatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands, Dutch Cochrane Center, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands

Karel Moons

Affiliation Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GJG KM PZ RS ML WB. Performed the experiments: GJG KM PZ RS ML WB. Analyzed the data: GJG KM RS WB. Contributed reagents/materials/analysis tools: GJG KM PZ RS ML WB. Wrote the paper: GJG KM.