Supplemental material for Is systemic lupus erythematosus different in urban versus rural living environment? Data from the Cretan Lupus Epidemiology and Surveillance Registry

Supplemental Material for Is systemic lupus erythematosus different in urban versus rural living environment? Data from the Cretan Lupus Epidemiology and Surveillance Registry by I Gergianaki, A Fanouriakis, C Adamichou, G Spyrou, N Mihalopoulos, S Kazadzis, L Chatzi, P Sidiropoulos, D T Boumpas and G Bertsias in Lupus