Factor IXa-factor VIIIacell surface complex does not contribute to the basal activation of the coagulation mechanism in vivo - Bauer, K A; Mannucci, P M; Gringeri, A; Tradati, F; Barzegar, S; Kass, B L; ten Cate, H; Kestin, A S; Brcttler, D B; Rosenberg, R D (Blood, 1992)