Oral contraceptive steroids are of 2 types: oestrogens, of which ethinyloestradiol is the most
important, and progestagens, of which levonorgestrel and norethisterone are the most …

Although this of the Journal of the American Medical Association replied," There is no
absorption from the intact vaginal mucosa." statement was quickly challenged [21, as late as …

Thirteen women who were scheduled for hysterectomy volunteered for the study. Nine
women had a levonorgestrel‐releasing intrauterine contraceptive device inserted between …

A sensitive radioimmunoassay measuring serum medroxyprogesterone acetate (MPA) has
been developed in order to measure and correlate serum MPA concentrations and ovarian …

The ovarian function of 20 healthy users of a levonorgestrel-releasing intrauterine device
was studied by measurements of plasma estradiol, progesterone, and levonorgestrel …

BACKGROUND: This study was conducted to determine whether increased body mass
index (BMI) affects oral contraceptive (OC) pharmacokinetics and suppression of …

BACKGROUND: This study was conducted to compare oral contraceptive (OC)
pharmacokinetics (PK) in normal-weight [body mass index (BMI) 19.0–24.9] and obese (BMI …

We examine whether competitiveness in women is influenced by biological factors. Female
participants in a laboratory experiment solve a simple arithmetics task first under a piece rate …

To prevent the global health burdens of human immunodeficiency virus [HIV] and
unintended/mistimed pregnancies, we developed an intravaginal ring [IVR] that delivers …

Two levonorgestrel-releasing IUDs and a copper-releasing IUD of the same shape were
studied in a randomized comparative study over five years. The levonorgestrel-releasing …