1. Department of Pediatric Surgery and Intensive CareErasmus MC‐Sophia Children's HospitalRotterdamthe Netherlands
2. Department of OrthopedicsSection of Physical Therapy, Erasmus MC‐Sophia Children's HospitalRotterdamthe Netherlands
3. Department of PediatricsDivision of Respiratory Medicine, Erasmus MC‐Sophia Children's HospitalRotterdamthe Netherlands
4. Department of BiostatisticsErasmus Medical CenterRotterdamthe Netherlands