1. Department of Pediatrics; University of Turku and Turku University Hospital; Turku Finland
2. Department of Otorhinolaryngology; University of Turku and Turku University Hospital; Turku Finland
3. Research Centre of Applied and Preventive Cardiovascular Medicine; University of Turku; Turku Finland
4. Department of Allergy; University of Athens; Athens Greece
5. Centre for Paediatrics & Child Health, Institute of Human Development; University of Manchester; Manchester UK