The Impact of Case Finding on the Recruitment Yield for COPD Research in Primary Care: An Observational Study Respiration 2016;92:308-315 - DOI:10.1159/000450555 Fig. 1. Flow chart of the recruitment process. © 2016 S. Karger AG, Basel
The Impact of Case Finding on the Recruitment Yield for COPD Research in Primary Care: An Observational Study Respiration 2016;92:308-315 - DOI:10.1159/000450555 Fig. 2. Overall number of COPD patients (n = 216) recruited per month by the 35 PCPs. © 2016 S. Karger AG, Basel