Ultrasound-guided percutaneous thyroid nodule core biopsy: clinical utility in patients with prior nondiagnostic fine-needle aspirate - Samir, A E; Vij, A; Seale, M K; Desai, G; Halpern, E; Faquin, W C; Parangi, S; Hahn, P F; Daniels, G H (Thyroid, 2012)