Hachul H, Bittencourt LRA, Andersen ML, Haidar MA, Baracat EC, Tufik S
Effects of hormone therapy with estrogen and/or progesterone on sleep pattern in postmenopausal women
Int J Gynaecol Obstet103(3):207-12103(3):207-12doi: 10.1016/j.ijgo.2008.07.009