TY - JOUR AU - Koch, N; Stiefel, F; de Jonge, P TI - Identification of case complexity and increased health care utilization in patients with rheumatoid arthritis JO - Arthritis Rheum VL - 45 PY - 2001 DO - 10.1002/1529-0131(200106)45:3<216::AID-ART251>3.0.CO;2-F SP - 216 EP - 221 N1 - et al. ER -