As a medical professional who was/is a study object (National Lung Study, Global Human Genome Mapping), and a person who initiated studies (preoperative shaving vs clipping, slow release iodophor for the reduction of surgical infections), i can only say that it is important to know, who initiated a study, who financed it, what was the purpose/expected outcome of a study, was the study peer reviewed, and how was the study/results published.
If those identifiers are unknown, the results are nothing but "nice to know", and I have to take a look at this in the future.
The scientific value, and any recommendation based on his, would be close to zero!