Department of Pediatric Surgery;
University Childrens’ Hospital Basle;
Basle;
Switzerland;
Pulmonary Department;
Mainz University Hospital;
Mainz;
Germany;
Child and Adolescent Psychitric Department Baselland;
Baselland;
Switzerland;
Chest; Wall; Deformity; Pectus; Excavatum; Psychological; Distress; Surgery; Vacuum; Bell;