Granger C B, Gabriel D A, Reece N S, Boothroyd E, Harding M B, Harrison J K, Kong Y, Bashore T M
Department of Medicine, Duke University Medical Center, Durham, North Carolina.
Am J Cardiol. 1992 Mar 15;69(8):821-3. doi: 10.1016/0002-9149(92)90517-3.