How to use masks to prevent COVID-19

Mahidol University. Faculty of Medicine Ramathibodi Hospital2020-03-132020-03-132020-03-132020https://repository.li.mahidol.ac.th/handle/20.500.14594/52810engMahidol UniversityMaskCOVID-19Coronavirus diseaseHow to use masks to prevent COVID-19ImageFaculty of Medicine Ramathibodi Hospital Mahidol University