Department of Human Nutrition and Metabolism Research, Health Sciences School, Universidad Marista de Merida, Mérida, Mexico. Evidence-Based Medicine Department, Hospital Pediatrico de Sinaloa, Culiacán, Mexico. Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, Ontario, Canada. Endocrinology Service, Hospital Regional de Alta Especialidad de la Peninsula de Yucatan, Merida, Mexico. Nuffield Department of Primary Health Sciences, Radcliffe Observatory Quarter, University of Oxford Centre for Evidence-Based Medicine, Oxford, UK.