TY - JOUR AU - Prandoni, P; Cogo, A; Bernardi, E TI - A simple ultrasound approach for detection of recurrent proximal-vein thrombosis JO - Circulation VL - 88 PY - 1993 DO - 10.1161/01.CIR.88.4.1730 L3 - PubMed-ID: 8403319 SP - 1730 EP - 1735. N1 - et al. ER -