About the Authors

Michele P. Hamm

michele.hamm@ualberta.ca

Affiliation Alberta Research Centre for Health Evidence, Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada

Terry P. Klassen

Affiliation Manitoba Institute of Child Health and Department of Pediatrics and Child Health, Faculty of Medicine, University of Manitoba, Winnipeg, Canada

Shannon D. Scott

Affiliations Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada, Faculty of Nursing, University of Alberta, Edmonton, Canada

David Moher

Affiliation Ottawa Hospital Research Institute, Ottawa, Canada

Lisa Hartling

Affiliation Alberta Research Centre for Health Evidence, Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada

Competing Interests

Lisa Hartling is a PLOS ONE Editorial Board member. This does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MPH TPK SDS DM LH. Performed the experiments: MPH. Analyzed the data: MPH TPK SDS DM LH. Wrote the paper: MPH TPK SDS DM LH.