1. Division of Pulmonary and Critical Care MedicineUniversity of CaliforniaIrvineCAUSA
2. Division of Pulmonary and Critical Care MedicineUniversity of CaliforniaLos Angeles David Geffen School of medicineLos AngelesCAUSA
3. Division of Pulmonary and Critical Care MedicineOlive View – UCLA Medical CenterLos AngelesCAUSA