Very mixed bag of the sources, several that look less than scientifically viable at a first glance (not judging whether they may have value along other dimensions). Others look more thorough/mainstream, like the very first one [0]. It would be interesting if someone who knows something about the field could evaluate how much this is worth paying attention to.
[0] https://mpkb.org/home/publications/heil_immunologic_2016
EDIT: Wait, is this a trolling/hoax paper? 'A case series of 64 patient-reported outcomes subsequent to use of a silver-threaded cap designed to protect the brain and brain stem from microwave Electrosmog resulted in 90 % reporting "definite" or "strong" changes in their disease symptoms.'
I should have checked first, this is posted on the author's own page. Here's someone assessing his ideas:
https://sciencebasedmedicine.org/the-marshal-protocol/
