Hermansyah, D.; Siregar, D. R.; Siregar, E. S. H.; Nasution, I. P. A.; Harahap, A. A. K.; Firsty, N. N.; Siregar, K. B. The Accuracies of Fine-Needle Aspiration Biopsy Without Ultrasound Guidance Versus Frozen-Section Examination of Thyroid Nodule Diagnosis in Teaching Hospital Universitas Sumatera Utara: Single-Center Experience. Open Access Maced J Med Sci 2022, 10, 1347-1352.