Anatomy Department, North China University of Science and Technology, Tangshan 063009, Hebei, China;
Anatomy Department, North China University of Science and Technology, Tangshan 063009, Hebei, China;
Jitang College of North China University of Science and Technology, Tangshan 063300, Hebei, China;
Anatomy Department, North China University of Science and Technology, Tangshan 063009, Hebei, China;
Anatomy Department, North China University of Science and Technology, Tangshan 063009, Hebei, China;
Anatomy Department, North China University of Science and Technology, Tangshan 063009, Hebei, China;