Christopher C Radchenko1, Paul K Cho2, Le Kang3, Timothy M Saettele4. 1. Interventional Pulmonology, University of Cincinnati Medical Center, 234 Goodman Street, Cincinnati, OH, 45219, United States. Electronic address: Radchecr@uc.edu. 2. Medical Student, University of Missouri, Columbia School of Medicine, 1 Hospital Dr., Columbia, MO, 65212, United States. Electronic address: Pkc797@health.missouri.edu. 3. Biostatistics, Virginia Commonwealth University, Department of Biostatistics, PO Box 980032, Richmond, VA, 23298, United States. Electronic address: Le.kang@vcuhealth.org. 4. Interventional Pulmonology, Midwest Pulmonary Consultants, 4321 Washington Ste. 6000, Kansas City, MO, 64111, United States. Electronic address: Tsaettele@saint-lukes.org.