title: How when matters for quitting and relapse.
authors.affiliation: University of Pittsburgh, Pittsburgh, Pennsylvania, PA, USA. shiffman@pinneyassociates.com
authors.forename: Saul
authors.initials: S
authors.lastname: Shiffman
mesh_terms: D000328:Adult; D005260:Female; D042341:Gonadal Hormones / Q000502:physiology; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology; D055502:Secondary Prevention; D016540:Smoking Cessation / Q000379:methods* / Q000523:psychology
chemical_list: D042341:Gonadal Hormones