References for cited articles.
| Country | City/State | Reference | All Cases with Renal Involvement |
|---|---|---|---|
| Australia | Sidney | Intern Med J 2008;38:816–23 | No |
| China | Shanghai | Kidney Blood Press Res 2008;31:343–9 | Yes |
| Chile | Santiago | Rev Med Chile 2005;133:273–8 | No |
| Czech Republic | Prague | Kidney Blood Press Res 2005;28:144–52 | Yes |
| Denmark | Copenhagen | Ann Rheum Dis 2000;59:478–82 | No |
| France | Paris | Arthritis Rheum 2004;51:92–9 | No |
| Valenciennes | Am J Med 1999;106:527–33 | No | |
| Germany | Schlesswig-Holstein | Arthritis Rheum 2005;53:93–9 | No |
| Munich | Nephrol Dial Transplant 2004;19:1403–11 | Yes | |
| Greece | Athens | Clinical Nephrology 2009;72:31–7 | Yes |
| Heraklion | Clin Exp Rheumatol 2009;27:409–15 | No | |
| Thessaloniki | Ann NY Acad Sci 2005;1051:597–605 | Yes | |
| Ireland | Dublin | Clin Nephrol 1999;52:344–51 | No |
| Italy | Parma | J Rheumatol 2006;33:1299–306 | No |
| Japan | Miyazaki | Clin J Am Soc Nephrol 2006;1:2026–33 | Yes |
| Netherlands | Groningen | Rheumatology 2009;48:622–5 | No |
| New Zealand | Canterbury | Rheumatology 2006;45:624–8 | No |
| Norway | Tromsø | Ann Rheum Dis 2001 ;60:1156–7 | No |
| Peru | Lima | Reurnatologia 2005;21:146–50 | No |
| Slovenia | Ljubljana | Nephrol Dial Transplant 2003; 18 Suppl 5: V5–v7 | Yes |
| Spain | Lugo | Arthritis Rheum 2003;49:388–93 | No |
| Salamanca | Eur J Inter Med 2010;21:542–7 | No | |
| Sweden | Lund | Nephrol Dial Transplant 2006;21:1263–9 | Yes |
| Östergötland | J Intern Med 2009;265:496–506 | No | |
| Switzerland | Lausanne | J Rheumatol 2005;32:2167–72 | No |
| United Kingdom | |||
| Birmingham | Rheumatology 2005;44:495–501 | Yes | |
| London | Am J Kidney Dis 2003;41:776–84 | Yes | |
| Norwich | Q J Med 2005;98:97–111 | No | |
| Stevenage | Nephrol Dial Transplant 2004;19:356–64 | Yes | |
| United States | North Carolina | J Am Soc Nephrol 1996;7:33–9 | Yes |