1. Department of Clinical Research, Instituto Nacional de Cancerología de México, Mexico City, Mexico
2. Postgraduate Programs, Universidad Nacional Autónoma de México, Mexico City, Mexico
3. Heart Failure and Respiratory Distress Clinic, Cardiology Service, Instituto Nacional de Enfermedades Respiratorias “Ismael Cosío Villegas”, Mexico City, Mexico
4. Department of Clinical Nutrition, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico