Text and Data Mining valid from 2016-07-09
Received: 10 June 2016
Accepted: 23 June 2016
First Online: 9 July 2016
Compliance with ethical standards
: M. Mahler, E. Mummert and C. Bentow are employed at Inova Diagnostics selling autoantibody assays. Marvin Fritzler received honoraria from Inova Diagnostics.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study (retrospective) formal consent is not required.
: Informed consent was obtained from all individual participants included in the study.