1. Relationship between changes in the deep venous system and the development of the postthrombotic syndrome after an acute episode of lower limb deep vein thrombosis: A one- to six-year follow-up 
Brian F. Johnson, MD, Richard A. Manzo, RVT, Robert O. Bergelin, MS, D.Eugene Strandness, MD 
Journal of Vascular Surgery 
Volume 21, Issue 2, Pages (February 1995)
DOI: /S (95)
Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Proportion of limbs demonstrating no abnormality (N), reflux alone (R), obstruction alone (O), and reflux with obstruction (R + O) after DVT with respect to symptoms. Open bars indicate asymptomatic legs; filled bars indicate legs with clinical features of PTS.
Journal of Vascular Surgery  , DOI: ( /S (95) )
Copyright © 1995 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions