斯奇康对反复呼吸道感染患儿血清免疫球蛋白水平的影响
사기강대반복호흡도감염환인혈청면역구단백수평적영향
The impact of polysaccharide nucleic acid fraction of bacillus calmette-guerin on the serum immunoglobulin of children suffered from repeated respiratory infection