Comparison of response rates to a postal questionnaire from a general practice and a research unitBr Med J (Clin Res Ed) 1986; 292 doi: https://doi.org/10.1136/bmj.292.6513.140-b (Published 11 January 1986) Cite this as: Br Med J (Clin Res Ed) 1986;292:140
Log in using your username and password
Log in through your institution
Register for a free trial to thebmj.com to receive unlimited access to all content on thebmj.com for 14 days.
Sign up for a free trial