Age-Stratified Modeling of Clinical Heterogeneity in Polycystic Ovary Morphology Using Ultrasound-Based Machine Learning. - Kuang, Chenke; Wei, Qiao; Liu, Zichao; Zhang, Yanfen; Zhong, Zhuomin; Hu, Nian; Xiao, Chun; Bao, Liang; Xiao, Yaocheng; Du, Meng; Chen, Zhiyi (International Journal of Women's Health, 2026)