Comparing Participants and Nonparticipants in a Smoking Cessation Trial Selection Factors Associated With General Practitioner Recruitment Activity
- 1 January 1999
- journal article
- Published by Elsevier in Journal of Clinical Epidemiology
- Vol. 52 (1) , 83-89
- https://doi.org/10.1016/s0895-4356(98)00132-2
Abstract
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