1. Qilu Hospital of Shandong University, Jinan, Shandong 250012
2. Department of Cardiology, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
3. Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
4. Department of Obstetrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
5. Health Examination Center, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China