That is not because the links have been scrubbed but likely because there is no DR Dereck Knauss. Claiming to have PhD in virology and immunology but yet failing to mention from where he got his PhD and failing to mention at what laboratory he current works is a big tell.
As to Dr. Professor Michel Chossudovsky, he’s not a medical doctor. He is a Canadian economist, author and conspiracy theorist and connected to GRU. Here’s what you should know about him.
https://www.cbc.ca/news/technology/russian-disinformation-global-research-website-1.5767208
And the other supposed experts in this piece all link back to Michel (not a medical doctor) Chossudovsky’s website.