1. The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education, Chinese National Health Commission and Chinese Academy of Medical Sciences, The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Department of Cardiology, Shandong University Qilu Hospital, Jinan, Shandong 250012, P.R. China
2. Department of Orthopedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
3. Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
4. Department of Pathology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
5. Department of Ultrasound, Shandong University Qilu Hospital, Jinan, Shandong 250012, P.R. China