1. Department of Dermatology University Hospital of Brest Brest France
2. Laboratory of Interactions Neurons‐Keratinocytes University of Brest Brest France
3. Department of Internal Medicine‐Hematology Hospital of Cornouaille Quimper France
4. Department of Clinical Hematology University Hospital of Brest Brest France
5. Laboratory of Hematology University Hospital of Brest Brest France
6. France Intergroup of Myeloproliferative Neoplasms (FIM) France
7. Laboratory of Biochemistry University Hospital of Brest Brest France