Lutfie L, Darnindro N, Loho IM, Panggabean SD, Herardi R, Akbar P, et al. The Role of Mastery Learning in Basic Skills in Upper Abdominal Ultrasound: Insights from a Comprehensive Training Workshop for Internists. InaJGHE [Internet]. 2026 Aug. 31 [cited 2026 Oct. 13];27(2):134-40. Available from: https://ina-jghe.com/index.php/jghe/article/view/1183