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Flow diagram of patients included in the study, analysis and subgroup analysis. GCA, giant cell arteritis; ACR, American College of Rheumatology; TCZ, tocilizumab. *One patient was first diagnosed with vertebrobasilar ischemia and VA involvement in GCA in our department, the diagnosis of GCA was made 3.3 years earlier in the Department of Internal Medicine of the Hospital of Augsburg.
