1. Department of Dermatology and Copenhagen Wound Healing Center, Bispebjerg Hospital; University of Copenhagen; Copenhagen Denmark
2. Department of Pathology; Zealand University Hospital; Roskilde Denmark
3. Department of Clinical Microbiology, Hvidovre Hospital; University of Copenhagen; Copenhagen Denmark
4. Section of Biostatistics, Department of Public Health; University of Copenhagen; Copenhagen Denmark
5. Colgate-Palmolive; Piscataway New Jersey
6. Digestive Disease Center, Bispebjerg Hospital; University of Copenhagen; Copenhagen Denmark