Text and Data Mining valid from 2019-07-10
Received: 25 February 2019
Accepted: 29 May 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: This study was in compliance with our hospital’s ethical standards. Informed consent was obtained from all individual participants.
: Not applicable
: This study was partially supported by an unrestricted grant from Bayer pharmaceuticals.