Text and Data Mining valid from 2018-10-13
Accepted: 17 September 2018
First Online: 13 October 2018
Compliance with ethical standards
: None of the authors declare any conflict of interest.
: This study is a secondary analysis of data collected in several patient registries. Ethical approval for the collection of patient data was given by the regional review boards.
: All patients have provided written consent for their data to be used for scientific studies.