Study of pelvic floor muscle strain rate in postpartum patients    with stress urinary incontinence by perineal 4D ultrasound
YIN Jing, JING Yan, LI Yifan, ZHENG Yanfen
Journal of Baotou Medical College . 2024, (10): 32 -37 .  DOI: 10.16833/j.cnki.jbmc.2024.10.007