1. Tophus-derived monosodium urate monohydrate crystals are biologically much more active than synthetic counterpart

   • A. Stanković
   • P. Front
   • D. R. Mitrović

   Originals Pages: 221 - 226

2. Primary fibromyalgia and the chronic fatigue syndrome

   • A. J. Wysenbeek
   • Y. Shapira
   • L. Leibovici

   OriginalPaper Pages: 227 - 229

3. Antibodies to arthritis-associated microbes in inflammatory joint diseases

   • O. Mäki-Ikola
   • M. K. Viljanen
   • K. Granfors

   OriginalPaper Pages: 231 - 234

4. Induction of IgM and IgM-rheumatoid factor synthesis in vitro by indomethacin

   • J. Hassan
   • A. Whelan
   • C. Feighery

   OriginalPaper Pages: 235 - 239

5. Systemic lupus erythematosus —changing disease patterns in the disease course

   • A. J. G. Swaak
   • W. Bronsveld
   • R. J. T. Smeenk

   OriginalPaper Pages: 241 - 244

6. C1q-bearing immune complexes detected by a monoclonal antibody to human C1q in rheumatoid arthritis sera and synovial fluids

   • U. Antes
   • H. -P. Heinz
   • M. Loos

   OriginalPaper Pages: 245 - 250

7. The triggering role of physical injury in the onset of peripheral arthritis in seronegative spondyloarthropathy

   • I. Olivieri
   • G. Gemignani
   • G. Pasero

   Case reports Pages: 251 - 253

8. Primary antiphospholipid syndrome (PAPS)

   • J. A. Rump
   • B. Lang
   • H. H. Peter

   OriginalPaper Pages: 255 - 260

9. Announcements

   Announcement Pages: 260 - 260