**Author details**

Vangal Krishnaswamy Sashindran1 \* and Puja Dudeja<sup>2</sup>

1 Principal Medical Officer, HQ Central Air Command, Prayagraj, India

2 Colonel (Pensions), Office of Director General Armed Forces, New Delhi, India

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

© 2020 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.
