It's from narcolepsy network, which is narcolepsynetwork.org (it's on the very top of the document). Use the search box there to find the article. I tend to make web content into a Word document so when I print at the library it comes out clearly.
Good luck with the new doctor. I don't get much health advice from my sleep doctor, however she's checked both my iron and thyroid, both okay. I think even general health info can be helpful. I hope you get some answers to your questions.