1. Department of Thyroid and Breast Surgery, Weifang Yidu Central Hospital, Weifang, Shandong, 262500, China;
2. Department of Pediatrics, Weifang Yidu Central Hospital, Weifang, China
3. Qingzhou Medical Security Bureau, Weifang, China
4. Department of Human Anatomy, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China