- Woodruff, Prescott;
- O'Neal, WK;
- Anderson, W;
- Basta, PV;
- Carretta, EE;
- Doerschuk, CM;
- Barr, RG;
- Bleecker, ER;
- Christenson, SA;
- Curtis, JL;
- Han, MK
Background: As a part of the longitudinal Chronic Obstructive Pulmonary Disease (COPD) study, Subpopulations and Intermediate Outcome Measures in COPD study (SPIROMICS), blood samples are being collected from 3200 subjects with the goal of identifying bloo