Vaccination status, acceptance, and knowledge toward a COVID-19 vaccine among healthcare workers: a cross-sectional survey in China oleh Xiao-Hong Li, Lin Chen, Qi-Ni Pan, Juan Liu, Xu Zhang, Jing-Jing Yi, Chun-Mei Chen, Qiu-Hu Luo, Pin-Yue Tao, Xiao Pan, Su-Yu Lu, Liang-Zhong Liu, Hui-Qiao Huang