1. Obesity Research Unit, Faculty of Medicine, National Autonomous University of Mexico, México City, México
2. Section of Postgraduate Studies and Research, Higher School of Medicine, National Polytechnic Institute, México City, México
3. Subdirection of Teaching and Research, National Medical Center “20 de November”, Institute of Security and Social Services of State Workers, México City, México
4. Obesity Clinic, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”, México City, México
5. Integral Clinic of Surgery for Obesity and Metabolic Diseases, General Hospital “Dr. Rubén Leñero”, CDMX, México City, México
6. Division of Genomic Medicine, Subdirection of Teaching and Research, National Medical Center “20 de November”, Institute of Security and Social Services of State Workers, México City, México