Department of Urology and Medical Center for Overseas Patients;
Nanfang HospitaI;
Guangzhou;
Department of Radiotherapy;
Cancer Center of Guangzhou Medical University;
Guangzhou;
Department of Pediatric Surgery;
The First Affiliated Hospital of Shantou University Medical College;
Shantou;
School of Basic Medical Sciences;
Southern Medical University;
Guangzhou;
Department of Epidemiology;
School of Public Health and Tropical Medicine;
Southern Medical University;
Guangzhou;
China.;