Role of local therapy in the management of patients with metastatic anal squamous cell carcinoma: a National Cancer Database study

Rami P. Atallah, Yining Zhang, Katerina Zakka, Renjian Jiang, Zhonglu Huang, Walid L. Shaib, Maria Diab, Mehmet Akce, Christina Wu, Bassel F. El-Rayes, Olatunji B. Alese