Meireles, G. C. X., and L. M. Abreu Filho. “Intercoronary Connection With Bidirectional Blood Flow and Concentric Left Ventricular Hypertrophy”. São Paulo Medical Journal, vol. 112, no. 4, Oct. 1994, pp. 654-7, https://periodicosapm.emnuvens.com.br/spmj/article/view/1495.