1. Department of Ultrasonography Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong First Medical University Jinan China
2. Department of Neonatology Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong First Medical University Jinan China
3. Department of Pediatrics Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong First Medical University Jinan China
4. Department of Geriatric Respiratory The First Affilliated Hospital of Shandong First Medical University, Shandong First Medical University Jinan China
5. Department of Ultrasound Diagnosis and Treatments Dezhou Maternal and Child Health Hospital Dezhou China
6. Department of Critical Care Medicine Shandong Provincial Hospital Affiliated to Shandong First Medical University, Shandong First Medical University Jinan China
7. School of Medicine Shandong University Jinan China
8. School of Medicine Shandong University of Traditional Chinese Medicine Jinan China