» BBC News Health - Human Gland evolved from Gills - The human parathyroid gland, which regulates calcium levels, probably evolved from fish gills, say researchers.
» Endocrine Surgeon: Parathyroid - Includes a history, symptoms, diagnosis, and related topics done in a easy to read format.
» Parathyroid.com - Discusses diseases, symptoms, tests, and treatments, including mini-surgery.
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