Mu, W.- na, Li, J.- heng, Liu, Y., Liang, H.- qing and Liu, X. (2022) “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, 38(6). doi: 10.12669/pjms.38.6.5471.