title: Perfluoroalkyl acids and Time-to-Pregnancy: The issue of "parity-conditioning bias".
authors.affiliation: Department of Obstetrics and Gynecology, Kingston General Hospital, Queen's University, Kingston, Canada. Electronic address: maria.velez@queensu.ca.
authors.forename: M P
authors.initials: MP
authors.lastname: Vélez
authors.affiliation: Population Studies Division, Healthy Environments and Consumer Safety Branch, Health Canada, Ottawa, Canada.
authors.forename: T E
authors.initials: TE
authors.lastname: Arbuckle
authors.affiliation: Sainte-Justine University Hospital Research Centre, University of Montreal, Montreal, Canada; Department of Obstetrics and Gynecology, University of Sherbrooke, Sherbrooke, Quebec, Canada.
authors.forename: W D
authors.initials: WD
authors.lastname: Fraser
authors.affiliation: Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, MD, United States.
authors.forename: S L
authors.initials: SL
authors.lastname: Mumford
mesh_terms: D017738:Alkanesulfonic Acids / Q000097:blood*; D002210:Caprylates / Q000097:blood*; D005260:Female; D005466:Fluorocarbons / Q000097:blood*; D006801:Humans; D007247:Infertility, Female; D011247:Pregnancy; D061685:Time-to-Pregnancy
chemical_list: D017738:Alkanesulfonic Acids; D002210:Caprylates; D005466:Fluorocarbons