發送短信

數:

提供者:

CAPTCHA:

  ____      _____    _    _     ______   _    _   
 |  _ \\   |  ___|| | |  | ||  /_   _// | \  / || 
 | |_| ||  | ||__   | |/\| ||   -| ||-  |  \/  || 
 | .  //   | ||__   |  /\  ||   _| ||_  | .  . || 
 |_|\_\\   |_____|| |_// \_||  /_____// |_|\/|_|| 
 `-` --`   `-----`  `-`   `-`  `-----`  `-`  `-`

Please enter what you see:

發送短信 : Effects of face masks and ventilation on the risk of SARS-CoV-2 respiratory transmission in public toilets: a quantitative microbial risk assessment