Model-independent test of the parity symmetry of gravity with gravitational waves Wen Zhao, Tan Liu, Linqing Wen, Tao Zhu, Anzhong Wang, Qian Hu and Cong Zhou Eur. Phys. J. C, 80 7 (2020) 630 Published online: 16 July 2020 DOI: 10.1140/epjc/s10052-020-8211-4