2,981
Participants
Start Date
November 30, 2010
Primary Completion Date
December 31, 2030
Study Completion Date
December 31, 2030
Columbia University, New York
Temple University, Philadelphia
Johns Hopkins University, Baltimore
Wake Forest University, Winston-Salem
University of Alabama at Birmingham, Birmingham
University of Michigan, Ann Arbor
University of Iowa, Iowa City
University of Illinois at Chicago, Chicago
National Jewish Health, Denver
University of Utah, Salt Lake City
University of California at Los Angeles, Los Angeles
University of California at San Francisco, San Francisco
National Heart, Lung, and Blood Institute (NHLBI)
NIH
COPD Foundation
OTHER
Columbia University
OTHER
Johns Hopkins University
OTHER
National Jewish Health
OTHER
Temple University
OTHER
University of Alabama at Birmingham
OTHER
University of California, Los Angeles
OTHER
University of California, San Francisco
OTHER
University of Illinois at Chicago
OTHER
University of Iowa
OTHER
University of Michigan
OTHER
University of Utah
OTHER
Wake Forest University
OTHER
University of North Carolina, Chapel Hill
OTHER