Walfish, P G A prospective study of combined ultrasonography and needle aspiration biopsy in the assessment of the hypofunctioning thyroid nodule. [electronic resource] - Surgery Oct 1977 - 474-82 p. digital Publication Type: Journal Article ISSN: 0039-6060 Subjects--Topical Terms: Adenoma--diagnosisBiopsy, NeedleCysts--diagnosisHumansHypothyroidism--diagnosisProspective StudiesThyroid Diseases--diagnosisThyroid Neoplasms--diagnosisUltrasonography