1. Division of Pulmonary and Critical Care MedicineTexas Tech University Health Sciences CenterEl PasoTXUSA
2. Division of GastroenterologyTexas Tech University Health Sciences CenterEl PasoTXUSA
3. Department of PathologyTexas Tech University Health Sciences CenterEl PasoTXUSA
4. Division of Cardiovascular MedicineTexas Tech University Health Sciences CenterEl PasoTXUSA
5. Division of Pediatric Pulmonary MedicineVanderbilt UniversityNashvilleTNUSA
6. Division of Pulmonary and Critical Care MedicineCleveland ClinicOHUSA