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Contraception|March 1, 1987
Plasma levels of levonorgestrel and free levonorgestrel index in women using NORPLANT implants or two covered rods (NORPLANT-2)S E Olsson, V Odlind, E D Johansson, et al.
Acta Obstetricia Et Gynecologica Scandinavica|January 1, 1977
A radioimmunological method for oestrone. Plasma levels of non-conjugated oestrone during uncomplicated pregnancyO Axelsson, B S Lindberg, B A Nilsson, et al.
Contraception|March 1, 1982
Pituitary and ovarian function during contraception with one subcutaneous implant releasing a progestin, ST-1435P Lähteenmäki, E Weiner, P Lähteenmäki, et al.
Contraception|February 1, 1981
Plasma levels of levonorgestrel in women during longterm use of norplantH B Croxatto, S Díaz, P Miranda, et al.
Contraception|June 1, 1987
Long-term follow-up of women treated with Norplant implantsS Díaz, M Pavez, P Miranda, et al.
Contraception|June 1, 1985
Plasma levonorgestrel and progesterone levels in women treated with silastic covered rods containing levonorgestrelH B Croxatto, S Díaz, A Brandeis, et al.
Contraception|December 1, 1980
Plasma levels of levonorgestrel in women during longterm use of NorplantsH B Croxatto, S Díaz, P Miranda, et al.
Acta Obstetricia Et Gynecologica Scandinavica|January 1, 1977
Cyclic fluctuation in noradrenaline transmitter of the monkey oviductN O Sjöberg, E D Johansson, C Owman, et al.
Contraception|July 1, 1990
Ovarian function during use of a levonorgestrel-releasing IUDI Barbosa, O Bakos, S E Olsson, et al.
Contraception|April 1, 1986
Bleeding pattern, outcome of accidental pregnancies and levonorgestrel plasma levels associated with method failure in Norplant implants usersS Díaz, M Pavez, C Herreros, et al.
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