1. Hariharan R, Pai CG.  Under-nutrition in tropical pancreatitis – cause or effect?  Digestive Diseases Week, Chicago USA May 31 – June 4 2009.

2. Polymorphism of serine hydroxymethyltransferase gene (SHMTIC1420T) and risk of colon cancer: An Indian case – control study. Human genome meeting 2008 – International conference, Hyderabad. India, September 27th to 30th 2008.

3. Endoscopic therapy of pain of tropical pancreatitis.  Asia Pacific Congress of Gastroenterology, Cebu, Philippines November 2006.

4. Endoscopic therapy of pancreatic ascites and pleural effusion.  Asia Pacific Congress of Gastroenterology, Cebu, Philippines November 2006

5. Endoscopic management of pancreatic fistulae.  Asia Pacific Congress of Gastroenterology, Hongkong March 2000.

6. Secondary oesophageal peristalsis in Gastro-oeophageal reflux disease. World Congresses of Gastroenterology, Vienna 1998.

7. Increased rectal sensitivity rather than increased transit characterises diarrhoea predominant Irritable Bowel Syndrome. National Conference of the Indian Society of Gastroenterology, Pune, November 1998.

8. Evidence for anti-oxidant stress in tropical pancreatitis, National Conference of the Indian Society of Gastroenterology, Hyderabad, November 1997.

9. Factors influencing frequency of bowel evacuation in the healthy adult. United European Gastroenterology Week, Birmingham, UK, October 1997.

10. Secondary oesophageal peristalsis in diabetes mellitus. National Conference of the Indian Society of Gastroenterology, Chandigarh, October 1996.

11. Peptic ulcers in portal hypertension. National Conference of Indian Society of Gastroenterology, Cuttack, November 1995.

12. Do serum amylase and lipase levels predict the outcome of diagnostic ERP? National Conference of the Indian Society of Gastroenterology, Cuttack, November 1995.

13. Extra-intestinal symptoms in non-ulcer dyspepsia. National Conference of the Indian Society of Gastroenterology, Varanasi, November 1994.

14. Evaluation of balloon distension as a test for rectal sensitivity. National Conference of the Indian Society of Gastroenterology, Trivandrum, October 1991.

15. Prevalence of Rectal varices in portal hypertension. National Conference of the Indian Society of Gastroenterology, Jaipur, October 1990.

16. Prevalence of Helicobacter pylori infection in dyspeptic patients. Conference of   the Kerala Chapter of Association of Physicians of India, Ernakulam, April 1990.