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How different online recruitment methods impact on recruitment rates for the web-based coortesnaweb project: a randomised trial
Blumenberg, Cauane, Menezes, Ana Maria Baptista, Gonçalves, Helen, Assunção, Maria Cecília Formoso, Wehrmeister, Fernando César, Barros, Aluísio J. D.Volume:
19
Language:
english
Journal:
BMC Medical Research Methodology
DOI:
10.1186/s12874-019-0767-z
Date:
December, 2019
File:
PDF, 998 KB
english, 2019