5Das RR. Zinc and vitamin A for prevention of upper re- spiratory tract infection in children[J]. Br J Nutr, 2012, 108(9) :1722.
6Pourfallah F,Javadian S, Zamani Z,et al. Evaluation of serum levels of essential trace elements in patients with pulmonary tuberculosis before and after treatment by age and gender[J]. Pak J Biol Sci, 2011,4 (10) : 590- 594.
7Das RR. Zinc and vitamin A for prevention of upper respiratory tract infection in children [ J ]. The British Journal of Nutrition, 2012,108 (9) : 1722.
8Pourfallah F, Javadian S, Zamani Z, et al. Evaluation of serum levels of essential trace elements in patients with pubnonary tuberculosis before and after treatment by age and gender [ J ]. Pak J Biol Sci,2011,4 ( 10 ) :590 - 594.
9Proskokova SV,Arsenina OI,Evseeva GP. Features of blood' s microelement structure of children of Khabarovsk area with dentitionanomalies[J]. Stomatologiia (Mosk),2010,89(4):18.
10Tomat AL,Costa Mde L,Arranz CT. Zinc restriction during different perioda of life:influence in renal and caidiovascular disease[J]. Nutrition,2011,27(4):392.
