1. Invited faculty -10th SAARC ENT Congress, Dhaka, Bangladesh, Oct. 2016.

2. Invited faculty-Rhinocon, Amritsar, India, Aug. 2017.

3.Invited faculty - 14th Asia Oceana ENT Congress and 71st Association of Otolaryngologists of India, Hyderabad, India, 9-13th Jan., 2019.

4. Invited faculty-6th Asian Society of Head & Neck Oncology, Seoul, South Korea, March 27~30, 2019. 5. Invited faculty- 17th National Conference of ORLHNS Bangladesh 30 Nov- 2 Dec., 2019 Dhaka.

6. Invited faculty -ISFAROCON2020, Chennai, India, 24-26th Jan., 2020.

7. Invited faculty 8th ASHNO, 16. 27-  29^t Nov. 2023, Bangkok, Thailand. 2023.