RT Journal Article SR Electronic T1 The placebo effect of direct current cardioversion on atrial fibrillation: myth or fact JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP s61 OP s61 DO 10.7861/clinmed.20-2-s61 VO 20 IS Suppl 2 A1 Myat Kaung Thu A1 Sanjay Gupta YR 2020 UL http://www.rcpjournals.org/content/20/Suppl_2/s61.abstract