title: Observational comparisons of different clinical services.
authors.affiliation: Stroke Prevention Research Unit, Department of Clinical Neurology, University of Oxford, Oxford OX2 6HE, UK. peter.rothwell@clneuro.ox.ac.uk
authors.forename: Peter M
authors.initials: PM
authors.lastname: Rothwell
mesh_terms: D006801:Humans; D007558:Italy; D015337:Multicenter Studies as Topic; D015588:Observer Variation; D010818:Practice Patterns, Physicians'; D016032:Randomized Controlled Trials as Topic; D020521:Stroke / Q000401:mortality / Q000628:therapy*