Footnotes

• Handling editor Josef S Smolen

• Correction notice This article has been corrected since it published Online First. The first affiliations has been amended.

• Collaborators Gerd Burmester, Peer Aries, Christoph Fiehn, Bimba Hoyer, Andreas Krause, Jan Leipe, Hanns-Martin Lorenz, Frank Moosig, Matthias Schneider, Philipp Sewerin, Anna Voormann, Ulf Wagner.

• Contributors All authors have provided the initial draft, led the discussion and corrected the text.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.

• Patient consent for publication Not required.

• Provenance and peer review Not commissioned; externally peer reviewed.