title: To the core.
authors.affiliation: Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands.|Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, the Netherlands.
authors.forename: F R
authors.initials: FR
authors.lastname: Rosendaal
authors.affiliation: Department of Thrombosis and Hemostasis, Leiden University Medical Center, Leiden, the Netherlands.|Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Leiden, the Netherlands.
authors.forename: P H
authors.initials: PH
authors.lastname: Reitsma
mesh_terms: D001777:Blood Coagulation; D002309:Cardiology / Q000193:education* / Q000379:methods; D002983:Clinical Competence; D003479:Curriculum; D006405:Hematology / Q000193:education* / Q000379:methods; D006487:Hemostasis; D006801:Humans; D012955:Societies, Medical; D011795:Surveys and Questionnaires; D013927:Thrombosis / Q000175:diagnosis* / Q000628:therapy*