AUTHOR=Dai Mengyuan , Tao Liyuan , Chen Zhen , Tian Zhi , Guo Xiaofang , Allen-Gipson Diane S. , Tan Ruirong , Li Rui , Chai Li , Ai Fen , Liu Miao TITLE=Influence of Cigarettes and Alcohol on the Severity and Death of COVID-19: A Multicenter Retrospective Study in Wuhan, China JOURNAL=Frontiers in Physiology VOLUME=Volume 11 - 2020 YEAR=2020 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2020.588553 DOI=10.3389/fphys.2020.588553 ISSN=1664-042X