. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Int J Surg. 2015 Feb 4;15:74–78. doi: 10.1016/j.ijsu.2015.01.033
© 2015 Surgical Associates Ltd. Published by Elsevier Ltd.
This manuscript version is made available under the CC BY-NC-ND 4.0 license.