![Female sex steroid concentrations in the ampullary and isthmic regions of the human fallopian tube and their relationship to plasma concentrations during the menstrual cycle]()
Female sex steroid concentrations in the ampullary and isthmic regions of the human fallopian tube and their relationship to plasma concentrations during the menstrual cycleBatra, S.; Helm, G.; Owman, C.; Sjöberg, N.-O.; Walles, B. · American Journal of Obstetrics and Gynecology · 1980