Kari Ratsula

Endocrinology: Subcutaneous goserelin versus intranasal buserelin for pituitary down-regulation in patients undergoing IVF: a randomized comparative study

Juha S. Tapanainen, Outi Hovatta, Kaisa Juntunen et al. · Human Reproduction · 1993 · 31 citations

Plasma levonorgestrel levels and ovarian function during the use of a levonorgestrel-releasing intracervical contraceptive device

Kari Ratsula, Juhani Toivonen, Pekka Lähteenmäki et al. · Contraception · 1989 · 28 citations

Contraceptive Use, Contraception, Infertility +15

Vaginal contraception with gossypol: A clinical study

Kari Ratsula, Maija Haukkamaa, K. Wichmann et al. · Contraception · 1983 · 23 citations

Contraception, Contraceptive Use, Hormonal Contraceptive +9

A 12-month comparative clinical investigation of a levonorgestrel-releasing intracervical device situated in the uterine cavity or cervical canal

P. Pakarinen, Tapani Luukkainen, Kaisa Elomaa et al. · Contraception · 1996 · 17 citations

Cervical Canal, Gynecologic Surgery, Gynecological Surgery +8

Measurements of salivary progesterone throughout the menstrual cycle in women suffering from unexplained infertility reveal high frequency of luteal phase defects

Taru Vuorento, Outi Hovatta, Henri Kurunmäki et al. · Fertility and Sterility · 1990 · 17 citations

Infertility, Hormonal Contraceptive, Fertility +14