1. Centre for Health Care Sciences, Örebro University Hospital
and Institution of Clinical Medicine, Örebro University, Örebro, Sweden,
2. Centre for Nursing Science, Örebro University Hospital
and Centre for Practical Knowledge, Bodø University College, Bodø, Norway
3. Paediatric Oncology Department, Queen Silvia Children's
Hospital, Gothenburg, Sweden
4. Centre for Nursing Science, Örebro University Hospital,
Örebro, Sweden