A multi-center clinical study of N-acetylcysteine on chronic hepatitis B
shi xiao feng ; guo shu hua ; wu gang ; mao qing ; yu yun song ; wang jin ke ; zhang ling ; wang zhi yi ; zhang xu qing ; zhang quan hai ; zhao you rong ; zeng wei qun ; he hua ; qin bo ; zhang da zhi ; ren hong ; liu zuo ; huang ai long