Chen S A, Yang C J, Chiang C E, Chiou C W, Cheng C C, Hsia C P, Tsang W P, Wang D C, Ting C T, Wang S P
Department of Medicine, National Yang-Ming Medical College, Taipei, Taiwan, Republic of China.
Am J Cardiol. 1993 Feb 15;71(5):471-3. doi: 10.1016/0002-9149(93)90462-l.