Pham , Thi Thanh Thoang, et al. “THE CLINICAL CHARACTERISTICS AND RESULTS OF MEDICAL ABORTION ON 9 WEEKS’ PREGNANCY IN WOMEN WITH PREVIOUS CESAREAN SECTION AT CAN THO GYNECOLOGY AND OBSTERTRICS HOSPITAL”. Cantho Journal of Medicine and Pharmacy, no. 30, June 2023, pp. 153-9, https://tapchi.ctump.edu.vn/index.php/ctump/article/view/1555.