Baseline fibrinolytic state and the risk of future venous thrombosis - Ridker, P M; Vaughan, D E; Stampfer, M J; Manson, J E; Shen, C; Newcomer, L M; Goldhaber, S Z; Hennekens, C H (A prospective study of endogenous tissue-type plasminogen activator and plasminogen activator inhibitor. Circulation, 1992)