1. De Zorggroep, Knowledge Centre of Wound Care, Venlo, the Netherlands.
2. Maastricht University, Caphri-School of Public Health and Primary Care, Department of Family Medicine, Maastricht.
3. Maastricht University, Caphri-School for Public Health and Primary Care,, the Netherlands.
4. Health insurance company, Coöperatie Volksgezondheidszorg (VGZ), the Netherlands.
5. Centre for Infectious Disease Research, Diagnostics and Screening (RIVM), the Netherlands.