TY - JOUR AU - Kawada, Tomoyuki PY - 2021/10/07 Y2 - 2024/03/29 TI - COVID-19 infection and tobacco smoking JF - EXCLI Journal JA - EXCLI J. VL - 20 IS - SE - Letters to the editor DO - 10.17179/excli2021-4242 UR - https://www.excli.de/index.php/excli/article/view/4242 SP - 1486-1487 AB - ER -