1. Department of Dermatology, Avicenne University Hospital AP‐HP, Sorbonne‐Paris‐Nord University Bobigny France
2. Department of Genetics Bergonié Institute Bordeaux France
3. Department of Gastroenterology, Avicenne University Hospital AP‐HP, Sorbonne‐Paris‐Nord University Bobigny France
4. UMRS‐1124, Campus Paris Saint‐Germain‐des‐Prés Paris University Paris France