EFFECT OF CONTACT LETTER ON CONTROL RESPONSE RATES IN CANCER STUDIES

• 1 March 1988
• journal article
• research article
• Published by Oxford University Press (OUP) in American Journal of Epidemiology
• Vol. 127  (3) , 691-694
• https://doi.org/10.1093/oxfordjournals.aje.a114844

Abstract

Keywords

• CONTROL GROUPS