1. Department of Health Research Methods, Evidence, and ImpactMcMaster University Hamilton ON Canada
2. Department of Child and Adolescent PsychiatryUniversity Hospital Essen, University of Duisburg – Essen Essen Germany
3. Department of Psychosomatic Medicine and PsychotherapyLWL University Clinic, Ruhr University Bochum Bochum Germany
4. Department of Pathology and Molecular MedicineMcMaster University Hamilton ON Canada