1. Senior Lecturer, Department of Nursing/Institute for Health Research, University of Salford, Salford, UK,
2. Paediatrician, Department of Paediatric Pneumology, Medizinische Hochschule, Hannover, Germany,
3. Consultant Paediatrician, Academic Department of Paediatrics, University of Keele, North Staffordshire Hospitals, Stoke‐on‐Trent, UK,
4. Professor of Paediatrics, Academic Department of Paediatrics, University of Keele, North Staffordshire Hospitals, Stoke‐on‐Trent, UK