Challenges of Prolonged Follow-up and Temporal Imbalance in Pragmatic Trials: Analysis of the ENCOURAGE Trial.
Ann Fam Med. 2015 Aug;13 Suppl 1(Suppl 1):S66-72. doi: 10.1370/afm.1790.
Ann Fam Med. 2015.
PMID: 26304974
Free PMC article.