[1] Hosp Badalona Germans Trias & Pujol, Med Interna Serv, Badalona 08916, Barcelona, Spain
[2] Hosp Univ Puerta Mar, Med Interna Serv, Cadiz, Spain
[3] Hosp Lluis Alcanyis, Serv Hematol, Xativa, Spain
[4] Univ Fed Rio de Janeiro, Hosp Univ Clementino Fraga Filho, Dept Internal Med, Rio De Janeiro, Brazil
[5] Univ Hosp S Orsola Malpighi, Dept Angiol & Blood Coagulat, Bologna, Italy
[6] Univ Hosp Geneva, Div Angiol & Hemostasis, Geneva, Switzerland
[7] Fac Med, Geneva, Switzerland
[8] Hosp Clin Barcelona, Dept Internal Med, Barcelona, Spain
[9] Univ Autonoma Barcelona, Fac Med, Barcelona, Spain