RT Journal Article SR Electronic T1 Rate control in atrial fibrillation JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 291 OP 292 DO 10.7861/clinmedicine.3-3-291 VO 3 IS 3 A1 Christopher Boos A1 Ranjit More YR 2003 UL http://www.rcpjournals.org/content/3/3/291.abstract AB