TY - CHAP M1 - Book, Section TI - Hormone Therapy in Women A1 - Schwinghammer, Terry L. A1 - DiPiro, Joseph T. A1 - Ellingrod, Vicki L. A1 - DiPiro, Cecily V. Y1 - 2021 N1 - T2 - Pharmacotherapy Handbook, 11e AB - Perimenopause begins with the onset of menstrual irregularity and ends 12 months after the last menstrual period, which marks the beginning of menopause. Menopause is the permanent cessation of menses caused by the loss of ovarian follicular activity. Women spend about 40% of their lives in postmenopause. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/04/16 UR - accesspharmacy.mhmedical.com/content.aspx?aid=1178896899 ER -