Back to the Future: Observational Studies and Anticoagulant Selection for Nonvalvular Atrial Fibrillation
Correspondence to: Melina Gattellari, BSc Psychol, MPH, PhD, Royal Prince Alfred Hospital, Department of Neurology, Missenden Rd, Camperdown, NSW 2050. Email Department of Neurology, The Royal Prince Alfred Hospital, Camperdown, Australia. For Disclosures, see page XXX. The opinions expressed in this article are not necessarily those of the editors or of the American Heart Association. Correspondence to: Melina Gattellari, BSc Psychol, MPH, PhD, Royal Prince Alfred Hospital, Department of Neurology,