%0 Journal Article %T Risk of Venous Thromboembolism after a Single Normal Proximal Lower Extremity Venous Ultrasound %A Hyo-Chun Yoon %A Myles M Mitsunaga %A Shannon Kogachi %J Archive of "The Permanente Journal". %D 2017 %R 10.7812/TPP/16-140 %X The optimal lower extremity venous ultrasound (US) protocol to diagnose deep venous thrombosis of the popliteal and more proximal veins is unclear %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5391780/