1. Keshan Disease Research Group of the Chinese Academy of Medical Sciences, Beijing,Chinese Med. J. 92, 471 (1979).
2. Keshan Disease Research Group of the Chinese Academy of Medical Sciences, Beijing,Chinese Med. J. 92, 477 (1979).
3. G. S. Fell, A. Shenkin, A. Main, R. Russel, A. Brown, and J. M. Ottaway,Proc. Nutr. Soc. 37A, 39 (1980).
4. S. Jacobson and P.-O. Wester,Brit. J. Nutr. 37, 107 (1977).
5. M. F. Robinson, P. J. Godfrey, C. D. Thomson, H. M. Rea, and A. M. van Rij,Am. J. Clin. Nutr. 32, 1477 (1979).