Which Study is True ?

[Carlos Marcello]

Hello everyone..

I want to learn the fact about finasteride's effect of scalp DHT..

I don't know which study is true.

In this study, 5 mg finasteride blocks scalp DHT by % 69.4.

http://www.ncbi.nlm.nih.gov/pubmed/10495374

But in this study 5 mg finasteride blocks scalp DHT by %41.

http://www.bernsteinmedical.com/resources/hair-restoration-papers/dutasteride-vs-finasteride/

Which study is true ?