The efficacy and safety of PD-1/PD-L1 inhibitors in patients with recurrent or metastatic nasopharyngeal carcinoma: A systematic review and meta-analysis

Oral Oncology ◽  
2020 ◽  
Vol 104 ◽  
pp. 104640 ◽  
Author(s):  
Bi-Cheng Wang ◽  
Ru-Bo Cao ◽  
Chen Fu ◽  
Wang-Bing Chen ◽  
Pin-Dong Li ◽  
...  
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