1. Department of Internal MedicineCollege of Medicine PhoenixUniversity of ArizonaPhoenixAZUSA
2. Department of Basic Medical SciencesA. T. Still UniversitySchool of Osteopathic Medicine ArizonaMesaAZUSA
3. Department of MedicineVanderbilt University Medical CenterNashvilleTNUSA
4. Cardiovascular Pulmonary Research LaboratoriesDepartments of Pediatrics and MedicineUniversity of Colorado Anschutz Medical CampusAuroraCOUSA