RT Journal Article SR Electronic T1 A short course of oral amiodarone improves sinus rhythm maintenance post-cardioversion for atrial fibrillation JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1063 OP 1064 DO 10.1136/hrt.2003.022665 VO 90 IS 9 A1 C Boos A1 J Ritzema A1 R S More YR 2004 UL http://heart.bmj.com/content/90/9/1063.abstract AB