by Gould, Lawrence, Ramana Reddy, C.V., Chua, W., Swamy, C.R.N., Dorismond, J.C.
Published in The American heart journal (01.09.1977)

by Gould, L, Reddy, C V, Swamy, C R, Oh, K C, Kim, S G
Published in Angiology (01.04.1979)