4G/5G promoter PAI-1 gene polymorphism is associated with plasmatic PAI-1 activity in italians: a model of gene-environment interaction - Burzotta, F; DiCastelnuovo, A; Amore, C; D’Orazio, A; Di Bitondo, R; Donati, MB; Iacoviello, L (Thromb Haemost, 1998)