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  1. Luciano S Pereira1,2,
  2. Michael K Yoon1,
  3. Thomas N Hwang1,
  4. Jenny E Hong1,
  5. Kathyrn Ray1,
  6. Timothy J McCulley1,
  7. Travis Porco3
  1. 1Department of Ophthalmology, University of California–San Francisco, San Francisco, California, USA
  2. 2Department of Ophthalmology, Santa Casa de São Paulo, São Paulo, Brazil
  3. 3Department of Epidemiology and Biostatistics, University of California–San Francisco, San Francisco, California, USA
  1. Correspondence to Timothy J McCulley, Department of Ophthalmology, University of California, 10 Koret Way, San Francisco, CA 94143, USA; tmccull5{at}

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We appreciate the interest in our manuscript and understand the criticism and assertions. In our study, ‘Giant cell arteritis in Asians: a comparative study’, we compared the occurrence rate of giant cell arthritis (GCA) in Asian and Caucasian patients at UCSF. We identified 38 cases of biopsy-proven GCA and matched each with four controls taken from the same population. We used both age and gender as matching variables. In our series, only …

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  • Linked article 204321.

  • Competing interests None.

  • Ethics approval This study was conducted with the approval of the UCSF.

  • Provenance and peer review Commissioned; not externally peer reviewed.

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