Epidemiological studies in incidence, prevalence, mortality, and comorbidity of the rheumatic diseases.
Arthritis Res Ther. 2009;11(3):229. doi: 10.1186/ar2669. Epub 2009 May 19.
Arthritis Res Ther. 2009.
PMID: 19519924
Free PMC article.
Review.