. 2019 Nov 28;8(Suppl 1):S17–S27. doi: 10.4103/eus.eus_50_19
Copyright: © 2019 Spring Media Publishing Co. Ltd
This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.