Sirpa Ranta

Levonorgestrel concentrations during 7 years of continuous use of Jadelle contraceptive implants☆

Irving Sivin, Livia Wan, Sirpa Ranta et al. · Contraception · 2001 · 77 citations

Contraceptive Use, Contraception, Contraceptive Implants +10

The CCHCR1 (HCR) gene is relevant for skin steroidogenesis and downregulated in cultured psoriatic keratinocytes

Inkeri Tiala, Sari Suomela, Jari Huuhtanen et al. · Journal of Molecular Medicine · 2007 · 66 citations

Skin Steroidogenesis, Autoimmune Disease, Cutaneous Biology +9

Levonorgestrel concentrations during use of levonorgestrel rod (LNG ROD) implants

Irving Sivin, Pekka Lähteenmäki, Sirpa Ranta et al. · Contraception · 1997 · 63 citations · Full text

Pharmacokinetic study of different dosing regimens of levonorgestrel for emergency contraception in healthy women

E. Johansson, Vivian Brache, Frank Álvarez et al. · Human Reproduction · 2002 · 56 citations · Full text

Alterations in the pituitary-thyroid and pituitary-adrenal axes—consequences of long-term mifepristone treatment

Oskari Heikinheimo, Sirpa Ranta, Steven M. Grunberg et al. · Metabolism · 1997 · 38 citations

Adrenal Gland, Pituitary Gland, Medicine +10