Document is current

Article History

Received: 3 October 2017

Accepted: 20 March 2018

First Online: 2 April 2018

Ethics approval and consent to participate

: This study was approved by the Institutional Review Board at the Rhode Island Hospital (the IRB committee number 0258–02). Additional informed consent was not required by the IRB for this retrospective study since our hospital standard consent form for surgical or other procedure specifically states that" I understand that the Hospital may use for teaching or scientific purposes, or may otherwise dispose of, tissues, fluids or organs removed during the procedure".

: 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.