FRI0525 Methodological challenges when comparing demographic and clinical characteristics of international observational studies. | Annals of the Rheumatic Diseases

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Epidemiology, health services and outcome research

FRI0525 Methodological challenges when comparing demographic and clinical characteristics of international observational studies.

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Cite this article as:: Verstappen S, Askling J, Yamanaka H, et al

FRI0525 Methodological challenges when comparing demographic and clinical characteristics of international observational studies.

Annals of the Rheumatic Diseases 2013;72:A552.