Multi-center analysis of false positive results of SARS-CoV-2 specific antibody assayHE Wei-wei, ZHOU Hui-xiang, WANG Wen-juan, YUAN Yu-jun, LUO Yan-ni, HUANG Long, DUAN Xun-xin, HUANG hui-jin, HU Xiu-quan, DAI Long-wen, XU Xiao-ding, WANG Bo-lan, CHEN Chun-hui, OUYANG Sheng-wu, YU Wen, ZHAO De-gang, HUA Lei, LI Jian-gen, LIU Feng, YU Xiao-hui, LI Nian-de, LIU Wen-zhong, GAO Ming-xiang, CHEN Qiu-hua, ZHAO Yong-mei, LENG Wen-xue, HE Chuang-hua, GUO Miao-sheng, HU Zhi-jian