Text and Data Mining valid from 2018-11-28
Received: 30 July 2018
Accepted: 25 November 2018
First Online: 28 November 2018
Compliance with ethical standards
: The authors declare that they have no conflicts of interests.
: This study was approved by our institution’s scientific research board, and conducted in accordance with the World Medical Association Declaration of Helsinki Standard of 1964, as revised in 1983 and 2000. All patients were informed about the study in detail before providing written informed consent for enrollment, including consent for postoperative computed tomography (CT) imaging.