Figure 1.
The three patient groups established by the presence of psychogenic or psychiatric background Abbreviations: ANA, antinuclear antibody; ANCA, antineutrophil cytoplasmic antibodies; ECG, echocardiography; RF, rheumatoid factor
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.