title: Absence of fluctuation in vaginal colonisation by Enterobacteriaceae during the menstrual cycle in patients with recurrent cystitis.
mesh_terms: D003556:Cystitis / Q000382:microbiology*; D004755:Enterobacteriaceae / Q000254:growth & development*; D004967:Estrogens / Q000097:blood; D005260:Female; D006801:Humans; D008598:Menstruation; D012008:Recurrence; D014621:Vagina / Q000382:microbiology*
chemical_list: D004967:Estrogens