**Author details**

Usha Goenka1 , Gajanan Ashokrao Rodge2 and Mahesh Kumar Goenka2 \*

1 Department of Interventional Radiology and Clinical Imaging, Apollo Gleneagles Hospital, Kolkata, India

2 Institute of Gastrosciences and Liver, Apollo Gleneagles Hospital, Kolkata, India

\*Address all correspondence to: mkgkolkata@gmail.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
