Don't use an agency that relies on postal questionnaires. (midsummerseve.com)
METHOD: A self - administered postal questionnaire was sent to a sample of 340 women aged 20 - 40 years who were registered with the study practice — a single - handed urban general practice that supports home confinement. (bjgp.org)
Alcohol consumption during pregnancy (assessed using postal questionnaires). (ebmh.bmj.com)