Campagnolo, M.T. et al. 2022. DUPLICITY OF THE FEMORAL VEIN AS A RISK FACTOR FOR DEEP VENOUS THROMBOSIS - DIAGNOSIS BY ULTRASONOGRAPHY. Portuguese Journal of Cardiac Thoracic and Vascular Surgery. 28, 4 (Jan. 2022), 63–65. DOI:https://doi.org/10.48729/pjctvs.228.