7Walsh C T,Sandstend H H,Prasad A S,et al.Zinc:health effects and re-search priorities for the 1990s[S].Environ Health Perspect,1994,102 (suppl 2):5-46.
8Stone J.Reduced selenium status of patients with asthma[J].Clin Sci,1989,77(5):495.
9Petrie H T.Selenium and the immune response[J].JLeuko Biol,1989,45(3):207.
