<qa>  What is the questionnaire used to determine menstrual cycle phase?MENSTRUAL CYCLE INTERVIEW To collect information on patients menstrual history as well as their current menstrual status, a Menstrual Cycle Interview will be administered for pre-menopausal patients. This interview consists of 13 questions related to the patients menstrual cycle and associated issues. The questionnaire can be used in conjunction with serum hormone levels to determine menstrual cycle phase. The questionnaire is administered at baseline and again at the conclusion of the trial. Patients will also be asked to keep a menstrual calendar to register onset and cessation of menstruation. 