1. Department of Biochemistry Research, National Institute of Respiratory Diseases “Ismael Cosío Villegas,” Mexico City, Mexico
2. Department of Clinical Epidemiology Research, National Institute of Respiratory Diseases “Ismael Cosío Villegas,” Mexico City, Mexico
3. Oncology Pneumology Service, National Institute of Respiratory Diseases “Ismael Cosío Villegas,” Mexico City, Mexico