Article History
Received: 30 November 2017
Accepted: 5 March 2018
First Online: 13 March 2018
Compliance with ethical standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: Karl Storz GmbH & Co. KG provided an endoscopic NIR/ICG system free of charge for performing the present study.
: The authors declare that they have no conflict of interest.