Extrahepatic Manifestations Associated with Hepatitis C Virus Infection: A Prospective Multicenter Study of 321 Patients

From Department of Internal Medicine (Patrice Cacoub, PH, JCP), and Immunochemistry Laboratory (LM), Hôpital La Pitié-Salpêtrière; Immunology Laboratory (AMY), Faculté de Médecine Necker; Department of Biostatistics (ACC), Faculté de Médecine la Pitié; Department of Internal Medicine (GR), Hôpital La Croix Saint Simon, Paris; and Department of Internal Medicine (CR), Hôpital d'Hyères, Hyères; Department of Internal Medicine (ER), Hôpital Archet, Nice; Department of Internal Medicine (Pascal Cohen), Hôpital Avicenne, Bobigny; Department of Internal Medicine (IL), Hôpital Saint André, Bordeaux; Department of Internal Medicine (VLR), Hôpital de Limoges, Limoges; and Department of Internal Medicine (PV), Hôpital de Compiègne, Compiègne, France.