Ulat mula sa Public Health England na pinamagatang PHE position paper sa HOCI at EMG na papel na \"Masks for healthcare workers to mitigate airborne transmission of SARS-CoV-2\", na may petsang 25/05/2021.
Ulat mula sa Public Health England na pinamagatang PHE position paper sa HOCI at EMG na papel na \"Masks for healthcare workers to mitigate airborne transmission of SARS-CoV-2\", na may petsang 25/05/2021.