[1] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Angelo Bianchi Bonomi Haemostasis & Thrombosis Ct, Milan, Italy
[2] Leiden Univ, Med Ctr, Dept Clin Epidemiol, Leiden, Netherlands
[3] Univ Med Ctr Utrecht, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[4] IRCCS Fdn Ca Granda Osped Maggiore Policlin, Angelo Bianchi Bonomi Haemostasis & Thrombosis Ct, Milan, Italy