1. Pulmonary and Critical Care DepartmentLoma Linda University Medical CenterLoma LindaCAUSA
2. Respiratory Care DepartmentLoma Linda University Medical CenterLoma LindaCAUSA
3. Department of Dental Education ServicesLoma Linda University School of DentistryLoma LindaCAUSA
4. Pulmonary and Critical Care DepartmentUniversity of California San Francisco‐FresnoFresnoCAUSA