Plasminogen activator inhibitor-1 plasma level increases with age in subjects with the 4G allele at position -675 in the promoter region - Bonfigli, Anna Rita; Sirolla, Cristina; Cenerelli, Stefano; Marra, Maurizio; Boemi, Massimo; Franceschi, Claudio; Testa, Ivano; Mari, Daniela; Sacchi, Elisabetta; Testa, Roberto (Thrombosis and Haemostasis, 2004)