KUNG, FYL. 2023. “Risk Factors for Levonorgestrel-Releasing Intrauterine System (LNG-IUS) Expulsion Among Chinese Women Treated for Menstrual Disorders: Retrospective Cohort Study in a Regional Hospital”. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery 11 (1). https://doi.org/10.12809/hkjgom.11.1.112.