Valle, J., Wasan, H., Palmer, D. H., Cunningham, D., Anthoney, A., Maraveyas, A., Madhusudan, S., Iveson, T., Hughes, S., Pereira, S. P., Roughton, M., & Bridgewater, J. (2010). Cisplatin plus gemcitabine versus gemcitabine for biliary tract cancer. New England journal of medicine, 362(14), 1273-1281. https://doi.org/10.1056/NEJMoa0908721