1. 1) Kutsche, L.M., Oyer, P., Shumway, N. et al. : An important complication of Hancock mitral valve replacement in children. Circulation 60 (Suppl. I) : I-98-103. 1979.
2. 2) Sanders, S.P., Levy, R.J., Norwood, W.I. et al. : Use of Hancock porcine xenografts in children and adolescents. Am. J. Cardiol. 46 : 429-438, 1980.
3. 3) Milano, A., Vouhé, P.R., Baillot-Vernant, F. et al. : Late results after left-sided cardiac valve replacement in children. J. Thorac. Cardiovasc. Surg. 92 : 218-225, 1986.
4. 4) Kadoba, K., Jonas, R.A., Mayer, J.E. et al. : Mitral valve replacement in the first year of life. J. Thorac. Cardiovasc. Surg. 100 : 762-768, 1990.
5. 5) Williams, W.G., Pollock, J.C., Geiss, D.M. et al. : Experience with aortic and mitral valve replacement in children. J. Thorac. Cardiovasc. Surg. 81 : 326-333, 1981.