6Roberts WC.Primary and secondary neoplasms of the heart.Am J Cardiol, 1997, 80:671-682.
7Reynen K.Frequency of primary tumors of the heart.Am J Cardiol, 1996,77:107 .
8Akihiro Endo, Akira Ohtahara, Toru Kinugawa, et al.Characteristic of 161 pat ients with cardiac tumors diagnosed during 1993 and 1994 in Japan.Am J Cardiol , 1997,79:1708-1711.
9Verkkalak K, Kupari M, Maumies T, et al.Primary cardiac tumors:Operative tre atment of 20 patients.Cardiovasc Surg, 1989,37:361-363.
