1. Guenther Research Inc. London ON Canada
2. Western University London ON Canada
3. Wansford and Kings Cliffe Practice Wansford UK
4. Dermatology Unit Department of Clinical Medicine and Surgery University Federico II Naples Italy
5. Center for Dermatology and Clinical Trials Mahlow Germany
6. LEO Pharma A/S Ballerup Denmark
7. Department of Medical and Health Sciences Division of Health Care Analysis Linköping University Linköping Sweden