The NIH isn't the publisher of these studies. PubMed is effectively just a search engine for a wide range of documents. The NIH isn't affiliated with the studies PubMed hosts, so there are also occasionally studies on it of questionable repute. That being said, PubMed is still a great source of accurate studies and I have no opinion about this particular study. I just think the affiliation with the NIH needs to be clarified.

Edit: looking at the article's citation, it looks like this study was published by the Journal of the Brazilian Medical Association.

Thanks for the link. Decent study. As with most cannabis research it shows real but small benefits that are not broadly generalizable. The take home is that for most people marijuana is purely recreational. If you happen to have tuberous sclerosis, it’s marginally good news.