Trieu, J., Bilal, M., & Hmoud, B. (1969). Factors associated with waiting time on the liver transplant list: an analysis of the United Network for Organ Sharing (UNOS) database. Annals of Gastroenterology, 31(1), 84-89. https://doi.org/10.20524/aog.2017.0217 (Original work published 1969)