Fish Oil and Postoperative Atrial Fibrillation: The Omega-3 Fatty Acids for Prevention of Post-operative Atrial Fibrillation (OPERA) Randomized Trial. JAMA-J Am Med Assoc 16 November Nov 2012 13 years ago Mozaffarian D, Marchioli R, Macchia A, Silletta MG, Ferrazzi P, Gardner TJ, Latini R, Libby P, Lombardi F, O'Gara PT, Page RL, Tavazzi L, Tognoni G; for the OPERA Investigators. Parolari A, Cavallotti L, Miyasoedova V, Laguzzi F in appendice http://www.ncbi.nlm.nih.gov/pubmed/23128104