Funding for this research was provided by:
Ministry of Health, Czech Republic, research project AZV (18-00542)
Text and Data Mining valid from 2018-07-27
Received: 28 February 2018
Accepted: 10 July 2018
First Online: 27 July 2018
Ethics approval and consent to participate
: The study was approved by the local ethics committee of the Institute of Rheumatology in Prague, Czech Republic. Written informed consent was obtained from all participants.
: Not applicable
: All authors declare no competing interests.
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