CJCP     2002 4 (4):  323-324    ISSN: 1008-8830  CN: 43-1301/R Clinico-pathologic features of childhood malignant tumors(275 cases) ZHANG Hai-Yan, FANG Jun, XIE Xiao-Zhi, GAO Bao-Hui Received: null  Revised: null  Online: null Supporting info