1. BORRONE, G., GATTI, R., TRIAD, C., and DURAND, P. (1974) J. Pediat., 84, 727
2. DEUTMAN, A. (1974) Trans. ophthal. Soc. U.K., 94, 643
3. DURAND, P., BORRONE, c., and DELLA CELLA, G. (1966) Lanzcet, 2, I313 GATTI, R., BORRONE, C., TRIAS, x., and DURAND, P. (1973) Ibid., 2, 1024
4. HOBBS, H. E., SORSBY, A., and FREEDMAN, A. (1959) Ibid., 2, 478
5. MACPHIE, G. B., LOGAN, R. W., and PRIMROSE, D. A. (1975) Ibid., 2, 462