GREGORY Y.H. LIP, MD, MRCP, is Professor of Cardiovascular Medicine at the University of Birmingham and Consultant Cardiologist and Director of the Haemostasis Thrombosis and Vascular Biology Unit in the University Department of Medicine at City Hospital, Birmingham, UK. Professor Lip is Clinical Advisor to the Guideline Development Group, which produced the National Institute of Health & Clinical Excellence (NICE) National UK guidelines on the management of Atrial Fibrillation. His research interests are in atrial fibrillation, hypertension, heart failure, thrombosis and antithrombotic therap...