Funding for this research was provided by:
National Research Foundation of Korea (2018R1A2B2004108)
Text and Data Mining valid from 2018-09-05
Received: 18 July 2017
Accepted: 30 August 2018
First Online: 5 September 2018
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Seoul National University Hospital (IRB No. 1402–058-557), and the tenets of the Declaration of Helsinki were followed.The patients with short BUT DE were prospectively enrolled in the study with written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.