[1] SCRIPPS CLIN & RES FDN, DEPT BASIC & CLIN RES, DIV EXPTL HEMOSTASIS, 10666 N TORREY PINES RD, LA JOLLA, CA 92037 USA
[2] POLICLIN UNITA SANITARIA LOCALE BA 9, CTR EMOFILIA, BARI, ITALY
[3] HARVARD UNIV, SCH MED, DANA FARBER CANC INST, BOSTON, MA 02115 USA
[4] UNIV CALIF SAN FRANCISCO, HOWARD HUGHES MED INST, SAN FRANCISCO, CA 94143 USA