Cardiac surgery with extracorporeal circulation in 23 infants weighing 2500 g or less: short and intermediate term outcome. - Beyens,T.; Biarent,D.; Bouton,J.M.; Demanet,H.; Viart,P.; Dessy,H.; Deville,A.; Lamote,J.; Deuvaert,F.E. (Eur J Cardiothorac Surg, 1998)