Text and Data Mining valid from 2019-04-16
Received: 9 January 2019
Accepted: 9 April 2019
First Online: 16 April 2019
Compliance with ethical standard
: All authors report no conflicts of interest. This work was not supported by any funding sources.
: This study was approved by the hospital’s Institutional Review Board (human and animals rights) #0198-18-RMC.
: For this type of retrospective study informed consent is not necessary.