Riviste scientifiche:    Thrombosis and Haemostasis Blood Stroke Nature Science JAMA NEJM Lancet BMJ Annals of Internal Medicine

Biblioteche virtuali e medline:        U.S. National Library of Medicine National Institutes of Health Food and drug administration   Free Medline Health Gate Infotrieve            Database per farmaci:        Banca dati farmaci - Ministero della Salute Istituto Mario Negri Merk Italia FarmaciNet The Internet Drug Index