Baoding People''s Hospital Baoding 071000 Hebei Province China;
Affiliated Hospital of Hebei University Baoding 071000 Hebei Province China;
Baoding People''s Hospital Baoding 071000 Hebei Province China;
Baoding No.1 Central Hospital Baoding 071000 Hebei Province China;
Baoding No.1 Central Hospital Baoding 071000 Hebei Province China;