University of Pittsburgh Emphysema/COPD Research Center, Pittsburgh, Pennsylvania, United States
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States
Magee-Womens Hospital, Pittsburgh, Pennsylvania, United States
University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, United States
UPMC, Pittsburgh, Pennsylvania, United States
University of Pittsburgh, Pittsburgh, Pennsylvania, United States
Magee-Womens Hospital, Pittsburgh, Pennsylvania, United States
University of Pittsburgh Medical Center-Presbyterian, Pittsburgh, Pennsylvania, United States
Magee Womens Hospital, Pittsburgh, Pennsylvania, United States