Doan, Minh Tuan, et al. “PROGNOSTIC VALUE OF THE DAY-7 TO DAY-1 𝛃-HCG RATIO IN THE TREATMENT OF UNRUPTURED ECTOPIC PREGNANCY WITH SINGLE- DOSE METHOTREXATE AT CAN THO OBSTETRICS AND GYNECOLOGY HOSPITAL IN 2024-2026”. Cantho Journal of Medicine and Pharmacy, no. 100, July 2026, pp. 210-6, doi:10.58490/ctjump.2026i100.4526.