Evaluation of the correlation between varicose veins of the lower extremity and the blood#br# flow parameters of inferior vena cava by ultrasonography
YIN Ning-ning, MI Ling-yu, LI Yan , ZHAO Yan-qin, XUE Li-li, ZHAO Ya-pei
Journal of Hebei Medical University . 2021, (5): 587 -591 .  DOI: 10.3969/j.issn.1007-3205.2021.05.018