heating, ventilation, and air conditioning(English)

• ACD, AGP, CFM, COVID-19, EPA, HCP, HEPA, HVE, MDC, NAGP, PM10, WMAF, LAF
• Air pollution, Care giver/provider, Dentistry, Military medicine
• https://doi.org…/milmed/usab225
• https://doi.org…al.pone.0259996