Text and Data Mining valid from 2019-07-15
Received: 18 April 2019
Accepted: 6 June 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: Our study is based on data that have been gathered through patients care during the last 15 years and is fully retrospective. Data handling (database protection, anonymization) and patients’ information process comply with the international recommendations.
: Not applicable; anonymization of data as well as phographies.
: The authors declare that they have no competing interests.