Comparison of fixed and flexible progestin-primed ovarian stimulation in women classified in patient-oriented strategies encompassing individualized oocyte number (POSEIDON) group 4 - Matsuda, Yoshie; Takebayashi, Akie; Tsuji, Shunichiro; Hanada, Tetsuro; Kasei, Ryo; Hirata, Kimiko; Murakami, Takashi (Archives of Gynecology and Obstetrics, 2024)