Adjuvant radiation therapy is not associated with improved survival in low-risk localized Merkel cell carcinoma: an Analysis of the National Cancer Database

Supplemental Material for Adjuvant radiation therapy is not associated with improved survival in low-risk localized Merkel cell carcinoma: an Analysis of the National Cancer Database for the Journal of the American Academy of Dermatology《低风险局限性默克尔细胞癌（Merkel cell carcinoma）辅助放射治疗未改善生存预后——基于美国国家癌症数据库（National Cancer Database）的分析》补充材料（原研究发表于《美国皮肤病学会杂志》）