affiliation not provided to SSRN, Nagoya City University, Osaka International Cancer Institute, Chiba University, Kyoto Prefectural University of Medicine, Shizuoka Cancer Center, Kyushu University, Wakayama Medical University, Kumamoto University, Kurume University, Hokkaido University, affiliation not provided to SSRN, Kobe University, Saitama Medical University International Medical Center (SIMC) - Department of Skin Oncology/Dermatology, Tohoku University, affiliation not provided to SSRN, Sapporo Medical University, Toyama Prefectural Central Hospital, affiliation not provided to SSRN, Saitama Cancer Center, Yokohama City University, University of Tsukuba, affiliation not provided to SSRN, Mie University, Shinshu University, Niigata Cancer Center Hospital, Jichi Medical University, University of Tokyo, Hokkaido University, Shimane University, Nagoya University, Asahikawa Medical University, Gifu University, University of Tsukuba, Nippon Medical School, University of Toyama, National Cancer Center Hospital, University of Texas at Houston - Department of Melanoma Medical Oncology and National Cancer Center Hospital