Ravekes W J, Colan S D, Gauvreau K, Baker A L, Sundel R P, van der Velde M E, Fulton D R, Newburger J W
Department of Cardiology, Children's Hospital, Boston, Massachusetts 02115, USA.
Am J Cardiol. 2001 Apr 1;87(7):919-22. doi: 10.1016/s0002-9149(00)01541-1.