Pediatrician with a Master’s degree Clinical Epidemiology and a PhD in Health Research Methodology. He is full Professor at the Department of Pediatrics at University of Antioquia (Medellin, Colombia), and Assistant professor (part-time) at McMaster University (Hamilton, Canada). He is the current leader of the Appraisal of Guidelines for Research & Evaluation (AGREE) Collaboration, Director of Cochrane Colombia, and the Editor-in-Chief of the Clinical and Public Health Guidelines journal. He is also Editorial Board member of the following Journals: Journal of Clinical Epidemiology, Pediatric Discovery, Cochrane Evidence Synthesis & Methods and the Journal of the American Heart Association. His research is focused on evidence synthesis methods, systematic reviews, network meta-analyses, clinical practice guidelines, and pediatrics.