Background The treatments of COVID-19 involve some degree of uncertainty. Current evidence also shows mixed findings with regards to bioaerosol dispersion and airborne transmission of COVID-19 during high flow nasal cannula (HFNC) therapy. While coping with this global pandemic created hot debates on the use of HFNC. it is important to bring detached opinions and current evidence to t... https://www.roneverhart.com/Air-Music-Technology-Vacuum-Pro-Virtual-Instrument-p8397/