2,000
Participants
Start Date
January 31, 2002
Primary Completion Date
April 30, 2017
Study Completion Date
January 31, 2030
ACTIVE_NOT_RECRUITING
Shanghai Children's Medical Center, Shanghai
RECRUITING
Shanghai Municipal Center of Disease Prevention & Control, Shanghai
Shanghai Children's Medical Center
OTHER
Shanghai Municipal Center for Disease Prevention & Control
UNKNOWN
Children's Cancer Group, China
NETWORK