Prevalence of Alpha-1 Antitrypsin Deficiency in Chronic Obstructive Pulmonary Disease (COPD)

St. Luke's-Roosevelt Hospital Center, New York

University of North Carolina at Chapel Hill, Chapel Hill

Medical University of South Carolina, Charleston

Atlanta VA Medical Center, Decatur

Emory Crawford Long Hospital, Atlanta

Emory University, Atlanta

University of Florida (Jacksonville), Jacksonville

University of Florida (Gainesville), Gainesville

University of Miami, Miami

Miami VA Medical Center, Miami

Cleveland Clinic Florida, Weston

The Cleveland Clinic Foundation, Cleveland

Mayo Clinic Rochester, Rochester

University of Chicago, Chicago

University of Texas Health Science Center at Tyler, Tyler

National Jewish Medical and Research Center, Denver

University of California Los Angeles, Los Angeles

Oregon Health & Science University, Portland

San Juan City Hospital, Centro Medico Metropolitano