Effects of Green Tea Gargling on the Prevention of Influenza Infection in High School Students: A Randomized Controlled Study Ide, Kazuki ; Yamada, Hiroshi ; Matsushita, Kumi ; Ito, Miki ; Nojiri, Kei ; Toyoizumi, Kiichiro ; Matsumoto, Keiji ; Sameshima, Yoichi Abstract Publication: PLoS ONE Pub Date: May 2014 DOI: 10.1371/journal.pone.0096373 Bibcode: 2014PLoSO...996373I