title: How regular is regular? An analysis of menstrual cycle regularity.
authors.affiliation: Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Magee Womens Research Institute, 300 Halket Street, Pittsburgh, PA 15213-3180, USA. mcreinin@mail.magee.edu
authors.forename: Mitchell D
authors.initials: MD
authors.lastname: Creinin
authors.forename: Sharon
authors.initials: S
authors.lastname: Keverline
authors.forename: Leslie A
authors.initials: LA
authors.lastname: Meyn
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D016014:Linear Models; D008597:Menstrual Cycle / Q000502:physiology*; D010298:Parity; D011446:Prospective Studies; D013997:Time Factors