1. Crile, G., Jr., Hazard, J.B.: Classification of thyroiditis. J. Clin. Endocrinol.11:1123, 1951
2. Martin, H.E., Ellis, E.B.: Biopsy by needle puncture and aspiration. Ann. Surg.92:169, 1930
3. Crile, G., Jr., Hawk, W.A., Jr.: Aspiration biopsy of thyroid nodules. Surg. Gynecol. Obstet.136:241, 1973
4. Wang, C., Vickery, A.L., Jr., Maloof, F.: Needle biopsy of the thyroid. Surg. Gynecol. Obstet.143:365, 1976