Clinical Problem and Significance: The incidence of neuroblastoma is about 30 cases a year in Taiwan. The five-year survival rate of neuroblastom is near 50% in Taiwan. Compared to the survival rate in Western countries, the treatment in Taiwan needs more efforts to improve. According to the report from the Childhood Cancer Foundation ROC, several children with neuroblastoma did not complete their treatment and or not received the protocol. In addition to the efforts in improving protocol, the reasons for those who drop-out and do not receive complete treatment need the investigators more attention to think of.