Giving links is meaningless you have to have.
1. The knowledge, not merely by googling.
2. The analytic ability to look at significance of finding. This includes some knowledge of statistics.
Quotes from scaremongering websites whether they are written by laymen, ex nurses and discredited ex consultants do not count. If it is questions of faith and conspiracies then I am afraid I can’t help you. Clark is to be admired for his perseverance.