1. Ultrasound Section, Department of Pediatric Radiology, Radiology and Nuclear Medicine Centre, Vilnius University Hospital Santaros Klinikos, 08661 Vilnius, Lithuania
2. Localinomed and Pediatric Department, Kliniken Salem, 3013 Bern, Switzerland
3. Children’s Hospital, Universitätsklinikum Dresden, Technische Universität Dresden, 01062 Dresden, Germany
4. Department of Radiology, UPMC Children’s Hospital of Pittsburgh, Pittsburgh, PA 15224, USA
5. Radiology Department, Hospital Regional Nicolas Solano, La Chorrera 1007, Panama
6. Department of Ultrasound, Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine, Shanghai 200092, China
7. Department Allgemeine Innere Medizin (DAIM), Kliniken Hirslanden Beau Site, Salem und Permancence, 3013 Bern, Switzerland