Text and Data Mining valid from 2019-12-01
Received: 8 August 2019
Accepted: 18 December 2019
First Online: 26 December 2019
Ethics approval and consent to participate
: The research was conducted ethically in accordance with the Declaration of Helsinki. The nature of this study is retrospective, and therefore retrospective ethics approval could not be obtained.
: We have the necessary consent from the patients who has individual personal images and data in the publication.
: The authors declare that they have no competing interests.