Text and Data Mining valid from 2020-04-26
Received: 8 April 2020
Accepted: 12 April 2020
First Online: 26 April 2020
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki and approved by Union Hospital ethics committee (approval number 20200009). Written informed consent was obtained from each enrolled patient.
: Not applicable.
: The authors declare that they have no competing interests.