SARS-CoV-2 total antibody detection results in blood donors from Shenzhen during different periods of COVID-19 epidemic prevention and control Journal title: Chinese Journal of Blood Transfusion Authors: Linfeng WU, Tingting CHEN, Haobiao WANG, Heng LIU, Tong LI, Lilin WANG, Xiaoxuan XU, Jinfeng ZENG Subject(s): Hematology