Dr Munshi has since been interviewed to clarify the details and background to his video, please see the follow up video for full details.
https://youtu.be/DRLqvWc-9gM
For further reading about respiratory care for Covid-19 NHS Scotland have some detailed articles here:
https://learn.nes.nhs.scot/28743/coro...
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https://support.google.com/youtube/an...
Dr Munshi provided personal acknowledgement & permission for this video upload on this YouTube Channel .