High incidence of hepatotoxicity of isoniazid treatment for tuberculosis chemoprophylaxis in patients with rheumatoid arthritis treated with methotrexate or sulfasalazine and anti-tumour necrosis factor inhibitors. Issue 12 (21st November 2003) - Vanhoof, J; Landewe, S; Van Wijngaerden, E; Geusens, P