EFFECTIVENESS OF VARIOUS MAILING STRATEGIES AMONG NONRESPONDENTS IN A PROSPECTIVE COHORT STUDY
- 1 June 1990
- journal article
- clinical trial
- Published by Oxford University Press (OUP) in American Journal of Epidemiology
- Vol. 131 (6), 1068-1071
- https://doi.org/10.1093/oxfordjournals.aje.a115598