This site describes itself as “The complete, authoritative, constantly updated, down-loadable source on clinical endocrinology”.
It is certainly comprehensive with a massive amount of information cover all endocrine disease from pathophysiology through to clinical management, common to obscure. Each subject is divided into lots of subsections, so you have to do a few clicks to get what you want. The text is nicely intersperced with diagrams and images and some sections referenced.
The style varies a bit between sections presumably due to the preferences of the many editors.
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