Vargas-Barron J, Avila-Rosales L, Romero-Cardenas A, Rijlaarsdam M, Keirns C, Buendia A
Department of Echocardiography, Instituto Nacional de Cardiologia Ignacio Chavez, Mexico, D.F.
Am Heart J. 1992 Jun;123(6):1707-9. doi: 10.1016/0002-8703(92)90832-g.