789
Participants
Start Date
January 31, 2003
Primary Completion Date
December 31, 2011
Study Completion Date
December 31, 2011
the first affiliated hospital of Zhengzhou University, Zhengzhou
The First Affiliated Hospital of Zhengzhou University
OTHER
the cancer hospital of Zhengzhou University
UNKNOWN
Third Affiliated Hospital of Zhengzhou University
OTHER
People's Hospital of Zhengzhou University
OTHER
Xinyang Central Hospital
OTHER
Zhoukou Central Hospital
OTHER
Center hospital of Nanyang
UNKNOWN
Center hospital of Shangqiu
UNKNOWN
Zhumadian Central Hospital
OTHER
Anyang Regional Hospital
OTHER
Luoyang Central Hospital
OTHER
First People's Hospital of Kaifeng
OTHER
Zhengzhou University
OTHER