Tunthanathip, T., and T. Bejrananda. “PD-1/PD-L1 Immune Checkpoint Inhibitors After Platinum-Based Chemotherapy in Metastatic or Locally Advanced Urothelial Bladder Carcinoma: A Systematic Review and Meta-Analysis: PD-1/PD-L1 Immune Checkpoint Inhibitors in Locally Advanced or Metastatic Urothelial Carcinoma”. PSU Medical Journal, vol. 1, no. 3, Sept. 2021, pp. 99-107, doi:10.31584/psumj.2021246346.