CJCP     2007 9 (4):  385-386    ISSN: 1008-8830  CN: 43-1301/R Etiology of long-time vomiting in pediatric patients SONG Hua, ZHANG Shu-Hong, XU Xiao-Hua, SI Tu-Ai-Ming, ZHAO Yu Tianjing Children's Hospital, Tianjing 300074, China. Received: null  Revised: null  Online: null Supporting info