Mu, W.- na, J.- heng Li, Y. Liu, H.- qing Liang, and X. Liu. “Comparative Study of Core Needle Biopsy and Fine Needle Aspiration in the Treatment of Metastatic Lymph Nodes Guided by Contrast-Enhanced Ultrasound”. Pakistan Journal of Medical Sciences, Vol. 38, no. 6, July 2022, doi:10.12669/pjms.38.6.5471.