title: Epidemiology and premenstrual syndrome: theories abound but where is the supporting evidence?
authors.forename: S D
authors.initials: SD
authors.lastname: Harlow
mesh_terms: D002110:Caffeine / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008597:Menstrual Cycle / Q000502:physiology; D011293:Premenstrual Syndrome / Q000139:chemically induced / Q000453:epidemiology* / Q000503:physiopathology; D011374:Progesterone / Q000502:physiology
chemical_list: D002110:Caffeine; D011374:Progesterone