1. Department of Clinical Nutrition, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Universidad Nacional Autónoma de México Mexico City Mexico
2. Department of Welfare and Sustainable Development University Center of the North, University of Guadalajara Colotlan Mexico
3. Gastroenterology Departament Hospital Civil de Guadalajara “Fray Antonio Alcalde” University of Guadalajara Guadalajara Mexico
4. Department of Philosophical, Methodological and Instrumental Disciplines Health Sciences University Center, University of Guadalajara Guadalajara Mexico
5. Biomedical Research Unit 02 Western National Medical Center, Mexican Institute of Social Security Guadalajara Mexico