Trivedi FJ, Deliwala KJ, Deliwala DJ, Patel SV. FIGO classification system (PALM-COEIN) for causes of abnormal uterine bleeding in non-gravid women. Int J Reprod Contracept Obstet Gynecol [Internet]. 2024 Apr. 26 [cited 2025 Oct. 30];13(5):1140-3. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/14113