Fibrinopeptide A excretion in urine: a marker of the cumulative thrombin activity in stable versus unstable angina patients - Ardissino, D; Gamba, M G; Merlini, P A; Rolla, A; Barberis, P; Demicheli, G; Testa, S; Bruno, N; Specchia, G (Am J Cardiol, 1991)