1. Division of Gastroenterology and Center for Autoimmune Liver Diseases, San Gerardo Hospital, Department of Medicine and SurgeryUniversity of Milano‐Bicocca Monza Italy
2. Clinical LaboratoryGuangdong Provincial Hospital of Chinese Medicine Guangzhou Guandong Province, China
3. Laboratory of ImmunologyInstitut Pasteur de Tunis and University Tunis El Manar Tunis Tunisia
4. Department of Research and Development, Inova Diagnostics San Diego California USA
5. Department of Anesthesia and Intensive Care, Tunis and Faculty of MedicineUniversity Tunis El Manar Tunis Tunisia
6. Key Laboratory of Gastroenterology and Hepatology, School of MedicineShanghai Jiao Tong University Shanghai China
7. Division of Rheumatology, Allergy and Clinical ImmunologyUniversity of California at Davis Davis California USA
8. Department of Medicine and Research Laboratory of Internal MedicineUniversity Hospital of Larissa Larissa Greece