1. Epstein, A. A. J. Amer. Med. Ass., 69 (1917), 444
2. Marsh, J. B. and Drabkin, D. L. Metabolism, 9 (1960), 948
3. Marsh, J. B. and Whereat, A. F. J. Biol. Chem., 234 (1959), 3196
4. Radding, C. M. and Steinberg, D. J. Clin. Invest., 39 (1960), 1560
5. Bar-on, H. and Shafrir, E. Isr. J. Med. Sci., 1 (1965), 365