by McCrindle, B W, Wood, M M, Collins, G F, Wheatley, B, Rowe, R D
Published in Canadian journal of cardiology (01.01.1996)

by Vincent, Robert N., Casiro, Oscar G., Pelech, Andrew N., Collins, George F.N.
Published in Journal of the American College of Cardiology (01.05.1986)

by Vincent, R N, Kesselman, M S, Collins, G F
Published in Pediatric cardiology (01.01.1986)