1. National Reference Center for Hypereosinophilic Syndrome (Cereo)
2. Department of Internal Medicine Hôpital Foch, Suresnes, France
3. Department of Respiratory Medicine, National Coordinating Reference Centre for Rare Pulmonary Diseases (Orphalung), Louis Pradel Hospital, Hospices Civils De Lyon, and Claude Bernard University Lyon 1, IVPC, Member of OrphaLung, RespiFIL and ERN-lung, France
4. Department of Internal Medicine, Hôpital Ambroise Paré, Université Paris Saclay, Assistance Publique Hôpitaux De Paris, Boulogne-Billancourt, France