RT Journal Article SR Electronic T1 Correction: Apatinib plus camrelizumab (anti-PD1 therapy, SHR-1210) for advanced osteosarcoma (APFAO) progressing after chemotherapy: a single-arm, open-label, phase 2 trial JF Journal for ImmunoTherapy of Cancer JO J Immunother Cancer FD BMJ Publishing Group Ltd SP e000798corr1 DO 10.1136/jitc-2020-000798corr1 VO 8 IS 1 YR 2020 UL http://jitc.bmj.com/content/8/1/e000798corr1.abstract