1. Mann, J. D., Cahan, A., Gelb, A. G., Fisher, N., Hamper, J., Tippett, P., Sanger, R., and Race, R. R., Lancet, i, 8 (1962).
2. Fraccaro, M., Ikkos, D., Lindsten, J., Luft, R., and Kaijser, K., Lancet, ii, 1144 (1960).
3. Klinger, H. P., Lindsten, J., and Fraccaro, M. (in preparation).
4. Muldal, S., Gilbert, C. W., Lajtha, L. G., Lindsten, J., Rowley, J., and Fraccaro, M. (in preparation).
5. Giannelli, F. (in preparation).