00789nam a22002297a 4500 408 408 D0001C000024 DOH 20200806155453.0 200428b ph ||||| |||| 00| 0 eng d DOH Mass masking in the COVID-19 epidemic : people need guidance / Chi Chiu Leung, Tai Hing Lam, Kar Keung Cheng www.thelancet.com Published online March 2, 2020. [Correspondence] Coronavirus Infections prevention and control Coronavirus Infections transmissions Masks supply and distribution World Health Organization COVID-19 Face Masks https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7133583/pdf/main.pdf CV nlm