title: Methods for obtaining valid data on time to pregnancy among men and women.
authors.affiliation: Imperial College School of Medicine, Department of Epidemiology & Public Health, London, United Kingdom. m.joffe@ic.ac.uk
authors.forename: M
authors.initials: M
authors.lastname: Joffe
mesh_terms: D000328:Adult; D003625:Data Collection / Q000379:methods*; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D011247:Pregnancy / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D013997:Time Factors