Use of a levonorgestrel-containing intrauterine system with supplemental estrogen improves symptoms in perimenopausal women: a pilot study.
Santoro N, Teal S, Gavito C, Cano S, Chosich J, Sheeder J. Use of a levonorgestrel-containing intrauterine system with supplemental estrogen improves symptoms in perimenopausal women: a pilot study. Menopause. 2015 Dec; 22(12):1301-7.