A Preoperative Nomogram Integrating Clinical and Ultrasonic Features to Predict Extra-Pelvic Metastasis in Ovarian Cancer: A Multicenter Retrospective Study. - Wang, Yanli; Lin, Weihong; He, Yifang; Wang, Dandan; Wu, Xiuming; He, Shaozheng; Gong, Min; Li, Luhong; Lyu, Guorong (International Journal of Women's Health, 2026)