PD-L1 expression in recurrent or metastatic head and neck squamous cell carcinoma in China (EXCEED study): a multicentre retrospective study.
Haizhen LuDong KuangPing ZhouJing ZengQingxin XiaJian WangPei DuanLili JiangShengbing ZangYiping JinXiangnan JiangJielin LiWenmin TangJiansong ZhouJihua ChenJianming YingPublished in: Journal of clinical pathology (2023)
ISRCTN10570964.