Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;
Affiliated Hospital of Chengde Medical College, Chengde, Hebei Province, 067000 China;