Andrzejewska M, Grzymisławski M. The role of intestinal ultrasound in the diagnosis of bowel diseases. Prz Gastroenterol. 2018;13(1):1-5.

Ong AM. Utility of gastrointestinal ultrasound in functional gastrointestinal disorders: A narrative review. World J Meta-Anal. 2020;8(2):109-18.

Frias-Gomes C, Torres J, Palmela C. Intestinal ultrasound in inflammatory bowel disease: A valuable and increasingly important tool. GE Port J Gastroenterol. 2021;29(4):223-39.

Maulahela H, Annisa NG, Konstantin T, Syam AF, Soetikno R. Simulation-based mastery learning in gastrointestinal endoscopy training. World J Gastrointest Endosc. 2022;14(9):512-23.

Nguyen-Vu T, Malvar C, Chin YK, et al. Simulation-based mastery learning (SBML) for rapid acquisition of upper endoscopy knowledge and skills: initial observation. VideoGIE. 2020;5(6):222-5.

Soetikno R, Asokkumar R, McGill SK, Kaltenbach T. Simulation-based mastery learning for practicing gastroenterologists-renewed importance in the era of COVID-19. Am J Gastroenterol. 2020;115(9):1380-3.

Soetikno R, Cabral-Prodigalidad PA, Kaltenbach T. Simulation-based mastery learning with virtual coaching: Experience in training standardized upper endoscopy to novice endoscopists. Gastroenterol 2020;159(5):1632-6.

Maulahela H, Soetikno RM, Kaltenbach TR, et al. Prospective study on comparison of simulation-based mastery learning versus conventional apprentice-based learning for basic endoscopy training. J Gastroenterol Hepatol. 2024;39(12):2804-10.

Østergaard ML, Rue Nielsen K, Albrecht-Beste E, Kjær Ersbøll A, Konge L, Bachmann Nielsen M. Simulator training improves ultrasound scanning performance on patients: A randomized controlled trial. Eur Radiol. 2019;29(6):3210-8.

Britz V, Sterz J, Vo SH, Carstensen P, Germanyuk A, Ruesseler M. Influence of the instructional approach “mastery learning” versus “see one, do one” on acquiring competencies in abdomen sonography: A comparative effectiveness analysis. Ultrasound in Med & Biol. 2020;46(8):1934-40.