¤³¤Î¡Ø¥é¥ó¥»¥Ã¥È¡Ù°å³Ø»¨»ï¤Îµ»ö Physical distancing, face masks, and eye protection to prevent person-to-person transmission of SARS-CoV-2 and COVID-19: a systematic review and meta-analysis https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31142-9/fulltext