1. Adams, F. H., Diehl, A., Jorgens, J., and Veasey, L. G. (1952). J. Pediat., 40, 49.
2. Apert, E., and Baillet, P.-C. (1932). Arch. Med. Enf., 35, 147.
3. Bayliss, R. I. S., Etheridge, M. J., and Hyman, A. L. (1950). Lancet, 2, 889.
4. Bouchard, F., Lason, R. L., and Alvarez, V. R. (1950). ler Congres Mondial. de Cardiologie, p. 271.
5. Brenner, O. (1935a). Arch. intern. Med., 56, 211.