A 2-year study on the beneficial effects of 17β-estradiol-dydrogesterone therapy on serum lipoproteins and Lp(a) in postmenopausal women: no additional unfavourable effects of dydrogesterone. - Van der Mooren,MJ.; Demacker,PNM.; Thomas,CMG.; Borm,GF.; Rolland,R. (Eur J Obstet Gynecol Reprod Biol, 1993)