1. General practice postal surveys: A questionnaire too far;McAvoy, B.R.; Kaner, E.F.S.;BMJ,1996
2. So much post, so busy with practice-so no time!: A telephone survey of general practitioners’ reasons for not participating in postal questionnaire surveys;Kaner, E.F.S.; Haighton, C.A.; McAvoy, B.R.;Br J Gen Pract,1998
3. Telephone versus postal surveys of general practitioners: methodological considerations;Sibbald, B.; Addington-Hall, J.; Brenneman, D.;Br J Gen Pract,1994
4. Professionals as responders: variations in and eVects of response rates to questionnaires;Cartwright, A.;BMJ,1978
5. Surveying general practitioners: does a low response rate matter?;Templeton, L.; Deehan, A.; Taylor, C.;Br J Gen Prac,1997