CJCP     2001 3 (6):  727-727    ISSN: 1008-8830  CN: 43-1301/R Different dosages of the 13C-urea breath test for the detection of Helicobactor pylori infection in children XIANG Li, WEN Fei-Qiu, TANG Yi, HE Wu-Shi, ZHUO Wei-Hua, LI Yu-Hua, LIU Zhi-Ping, LI Guo-Feng, CHEN Ting Received: null  Revised: null  Online: null Supporting info