Columbia subject headings:
Thyroid gland--Biopsy.
Thyroid gland--Cytopathology.
Thyroid gland--Diseases--Cytodiagnosis.
Harvard subject headings:
Thyroid gland--Biopsy.
Thyroid gland--Cytopathology.
Thyroid gland--Diseases--Cytodiagnosis.
Princeton subject headings: