1. KU Leuven; Department of Public Health and Primary Care; Academic Centre for Nursing and Midwifery; Leuven Belgium
2. Radboud Institute for Health Sciences; IQ Healthcare; Radboud University Medical Center; Nijmegen The Netherlands
3. Department of Public Health and Caring Sciences; Uppsala University; Uppsala Sweden
4. Department of Public Health and Primary Care Interuniversity; Institute for Biostatistics and Statistical Bioinformatics; KU Leuven; Leuven Belgium
5. University Hasselt; Hasselt Belgium
6. Department of Dermatology; Radboud University Medical Center; Nijmegen The Netherlands
7. Health Sciences; University of Southampton; Southampton UK