1. Department of Endocrinology, Laizhou People’s Hospital, Laizhou 261400, Shandong Province, China
2. Department of Laboratory Medicine, Laizhou People’s Hospital, Laizhou 261400, Shandong Province, China
3. Department of Gastrointestinal Surgery, Laizhou People’s Hospital, Laizhou 261400, Shandong Province, China
4. Department of Reproductive Medicine, Laizhou People’s Hospital, Laizhou 261400, Shandong Province, China