Does Requesting Sensitive Information on Postal Questionnaires Have an Impact on Response Rates? A Randomised Controlled Trial in the South West of England
Tim J. Peters, Ian M. Harvey, Max O. Bachmann and Jenny I. Eachus
期刊名称Journal of Epidemiology and Community Health (1979-)
作者Tim J. Peters, Ian M. Harvey, Max O. Bachmann and Jenny I. Eachus