American Thyroid Association
American Association of Clinical Endocrinologists
THYCA: Thyroid Cancer Survivors' Association, Inc.
Thyroid Foundation of America
The Endocrine Society
Canadian Thyroid Cancer Support Group
American Cancer Society
National Cancer Institute
Abbott Laboratories
Genzyme Corporation
Memorial Sloan-Kettering Cancer Center
Johns Hopkins Thyroid Tumor Center
American Medical Association Physician Directory
UCLA Endocrine Surgery
The Hormone Foundation