Acknowledgements We thank Drs. Hong Shan, Jin-Yu Xia, Zhong-He Li, Jing Liu, Ming-Xing Huang, Xi Liu, Fei Xiao, Shao-Lin Li, Xiao-Feng Li, Xiao-Hua Wang, Xiu-Juan Qu and Ms. Yan Nan from library, from the Fifth Affiliated Hospital, Sun Yat-Sen University, for their sharing the critical information on theranostics of COVID-19 patients and literature searching.