A lot goes on into clinical trials that you can never read about. There are many preliminary requirements, too many to list, on a case by case basis that are documented privately.

With this particular study, I would ask if I were safe from contracting campylobacter jenjuni or cytomegalovirus, two causes of Guillian Barre Syndrome. SFN is the worst thing until you compare it to large fiber, both sensory and motor, cranial, autonomic all together like in GBS. Please be careful.