1. International Symposium on Recent Trends in Nutrition. New Delhi, Dec. 1990.
2. Commonwealth Conference on Diarrhea and Malnutrition. New Delhi, 29 Nov– 1st Dec 1991. Presented: Transient paralysis in malnourished children with diarrhea.
3. 8th Asian Congress of Pediatrics. New Delhi, Feb. 6-11, 1994.
Presented: i) Clinical and Biochemical asphyxia in meconium stained deliveries
ii) Epidemiological correlates in acute diarrhea.
4. International CME on Laboratory Approach to Pediatric Problems, AIIMS, New Delhi, Oct.11-13, 1995.
5. Indo-US CME Program on Viral Hepatitis- Spectrum and Control, UCMS, New Delhi, Jan 30-31, 1998.
6. WHO Workshop on Problem Based Learning in Medical Education. B.P. Koirala Institute of Health Sciences, Dharan, Nepal, Oct 4-5, 1998.
7. Annual Conference of Royal College of Pediatrics and Child Health, York, UK. April 2000. Invited lecture: Undergraduate Pediatrics curriculum and training in India.
8. 6th World Congress and XIV Indian Conference on RCH. New Delhi 20-22 Sep 2002. Invited Lecture: Neonatal Resuscitation.
9. American Academy of Pediatrics. National Conference and Exhibition. San Francisco; USA Oct 9-13, 2004. Paper presented: Multi-Micronutrient supplementation to malnourished pregnant women and birth weight of their offspring: A double blind randomized controlled trial.
10. American Academy of Pediatrics. Looking Forward to Neonatal Resuscitation Program 2006. Seminar held at NCE 2004, San Francisco, USA. Oct 8, 2004.
11. Short Course for Editors: American Medical Association. Invited scholar. Chicago, Illinois, USA. Sep 14-15, 2005.
12. Fifth International Congress on Peer Review and Biomedical Publication. Chicago, Illinois, USA. Sep 16-18, 2005.
13. International Workshop on Micronutrients and Child Health. Chaired the keynote session; and delivered a lecture on Neonatal Vitamin A Supplementation. AIIMS, New Delhi. 20-22 Oct, 2009.
14. International Symposium on Protective Nutrients, All India Institute of Medical Sciences, New Delhi. 23-24 Feb, 2010.
15. International Course on Vaccinology. Child Health Foundation and INCLEN. Faculty and Organizer. Sohna, Gurgaon. 18-25 Sep, 2011.
16. 1st Annual Conference of South East Pediatrics Association (SAPA). Invited Talk on Paper Writing. Dhaka, Bangladesh. 5-8 April, 2014.
17. 2nd Annual Conference of South East Pediatrics Association (SAPA). Invited Workshop on Paper Writing. Colombo, Sri Lanka. 30 July-2 August, 2015.
18. The Journal of Pediatrics. Editorial Board Meeting at Baltimore, USA. 29-30 April, 2016.
19. Workshop on Research Methods and Paper writing. For Faculty, Royal College of University of Kuala Lumpur, Ipoh, Malaysia. 21 April 2018.
20. The Journal of Pediatrics. Editorial Board Meeting at Toronto, Canada. 4 May, 2018.