American Thyroid Association www.thyroid.org
Thyroid Foundation of America www.allthyroid.org Academy of Clinical Thyroidologists www.thyroidologists.com Thyroid Surgery Center of Texas www.thyroidcancer.com
American Association of Clinical Endocrinologists www.aace.com The Hormone Foundation www.hormone.org Up to Date www.patients.uptodate.com
National Osteoporsis Foundation www.nof.org National Institutes of Health www.osteo.org