1.
Duong-Quy S, Ngo-Minh X, Tang-Le-Quynh T, Tang-Thi-Thao T, Nguyen-Quoc B, Le-Quang K, Tran-Thanh D, Doan-Thi-Quynh N, Canty E, Do T, Craig T. The use of exhaled nitric oxide and peak expiratory flow to demonstrate improved breathability and antimicrobial properties of novel face mask made with sustainable filter paper and <em>Folium Plectranthii amboinicii</em&gt; oil: additional option for mask shortage during COVID-19 pandemic. Multidis Res Med [Internet]. 2020Jun.1 [cited 2021Oct.16];15. Available from: https://mrmjournal.org/mrm/article/view/664