1. Ultrasound-guided fine needle aspiration biopsy;Rosen;Am J Surg,1993
2. Non-diagnostic fine needle aspiration biopsy;McHenry;Am J Surg,1993
3. Canadian cancer statistics for the year 2001, Canadian Cancer Society,2001
4. Papillary microcarcinoma of the thyroid gland;Bramley;Br J Surg,1996
5. Occult micropapillary carcinoma;Fink;Mod Pathol,1996