1. https://www.nytimes.com/2018/04/26/health/doctors-cancer-immunotherapy.html.
2. Not all immune-checkpoint inhibitors are created equal: Meta-analysis and systematic review of immune-related adverse events in cancer trials;El Osta;Crit Rev Oncol Hematol,2017
3. https://en.wikipedia.org/wiki/Hippocratic_Oath.