5Cagnacci A, Arangino S, Baldassari F, et al. A comparison ofthe central effects of different progestinsused in hormonere placement therapy [ J ]. Maturitas ,2004,48 (4) :456-462.
6Hurskainen R, Teperi J, Rissanen P, et al. JAMA. Clinical outcomes and costs with the levonorgestrel-relesing intrau- terine system or hystereclomy for treatment of menorrhagia: randomized trial 5 - year follow - up [ J ]. JAMA, 2004,291 (12) :1456-1463.
7SlapG B. Menstrual disorclewin adolescence [ J ]. Best Pract Reslin Obster Gynaecol,2003,17 ( 1 ) :75-92.