Conflict of interest

PP, ZN, MR, KP, RG, MT and DNR declare no competing interests.

Ethical approval

The study was approved by the institutional review board. Written informed consent was taken from each patient and the study would conform to the 1975 Declaration of Helsinki ethical guidelines.

Informed consent

Informed consent was obtained from all individual participants included in the study.

Disclaimer

The authors are solely responsible for the data and the contents of the paper. In no way, the Honorary Editor-in-Chief, Editorial Board Members, the Indian Society of Gastroenterology or the printer/publishers are responsible for the results/findings and content of this article.