1. Department of Ophthalmology Rigshospitalet Glostrup Denmark
2. Department of Clinical Medicine, Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
3. Centre for Clinical Research and Prevention Bispebjerg and Frederiksberg Hospital Frederiksberg Denmark
4. Copenhagen Prospective Studies on Asthma in Childhood Copenhagen University Hospital Herlev‐Gentofte Denmark
5. Department of Pediatrics Slagelse Hospital Slagelse Denmark