title: Provision of pen along with questionnaire does not increase the response rate to a postal survey: a randomised controlled trial.
authors.affiliation: Academic Department of Obstetrics and Gynaecology, Birmingham Women's Hospital, Birmingham B15 2TG, UK. T.J.Clark@bham.ac.uk
authors.forename: T J
authors.initials: TJ
authors.lastname: Clark
authors.forename: K S
authors.initials: KS
authors.lastname: Khan
authors.forename: J K
authors.initials: JK
authors.lastname: Gupta
mesh_terms: D003253:Consultants; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D009042:Motivation; D011795:Surveys and Questionnaires / Q000592:standards*