Prognostic Value of an Immunohistochemical Signature in Patients With Head and Neck Mucosal Melanoma - Qing-Qing Xu; Qing-Jie Li; Cheng-Long Huang; Mu-Yan Cai; Mei-Fang Zhang; Shao-Han Yin; Li-Xia Lu; Lei Chen (Frontiers in Immunology, 2021)