1. Department of Dermatology and Venereology; University Hospital Centre Zagreb, University of Zagreb School of Medicine; Zagreb Croatia
2. Department of Medical Informatics, Biometry and Epidemiology; University of Erlangen-Nürnberg; Erlangen Germany
3. Health Care Quality Unit; General Hospital; Karlovac Croatia
4. National Allergy Research Centre, Department of Dermatology and Allergy; Herlev Gentofte Hospital, University of Copenhagen; Hellerup Denmark