van Lunteren, Miranda
Sepriano, Alexandre
Landewé, Robert
Sieper, Joachim
Rudwaleit, Martin
van der Heijde, Désirée
van Gaalen, Floris
Article History
Received: 5 April 2018
Accepted: 12 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: The ASAS cohort has been approved by the medical ethics committee of each participating center, and all patients gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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