Text and Data Mining valid from 2019-09-13
Received: 20 May 2019
Accepted: 2 September 2019
First Online: 13 September 2019
Ethics approval and consent to participate
: This analysis was done according to the standards of the Helsinki Declaration. We obtained permission from the local ethics committee. Informed consent forms were collected from all patients before the beginning of the treatment.
: Not applicable.
: The authors declare that they have no competing interests.