article 1996 Endometrial thickness assessed by transvaginal ultrasound insufficiently predicts occurrence of hyperplasia during unopposed oestrogen use ·doi:10.1016/0378-5122(96)00995-4
article 1995 Regression of endometrial thickness in combination with reduced withdrawal bleeding as a progestational effect of tibolone in postmenopausal women on oestrogen replacment therapy ·doi:10.1016/0378-5122(94)00867-7