Text and Data Mining valid from 2018-08-03
Received: 14 February 2018
Accepted: 28 June 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: Ethics approval was deemed unnecessary according to national regulations (RD 1090/2015, 4th December). Consent to participate was not applicable. All data analysis followed internal standards for the ongoing evaluation of electronic medical records data entry by medical personnel. Patient data were anonymized for research purposes.
: Not applicable.
: The authors declare that they have no competing interests.
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