1. Faculty of Medicine, Research Unit of Health Sciences and Technology University of Oulu Oulu Finland
2. Medical Research Center Oulu, Oulu University Hospital University of Oulu Oulu Finland
3. Institute of Pediatrics of Southern Switzerland Ente Ospedaliero Cantonale Bellinzona Switzerland
4. Neurocenter of Southern Switzerland Ente Ospedaliero Cantonale Lugano Switzerland
5. Department of Nursing Science University of Turku Turku Finland