A PHASE II STUDY OF ANTI‐PD‐1 SINTILIMAB IN COMBINATION WITH CHIDAMIDE AND AZACITIDINE IN REFRACTORY AND RELAPSED PERIPHERAL T‐CELL LYMPHOMA. (17th June 2021) - Ying, Z.; Song, Y.; Wang, X.; Lin, N.; Xie, Y.; Du, T.; Tang, Y.; Zhu, J.