1. Department of Neurosurgery, Govt. Kilpauk Medical College, Chennai, Tamil Nadu, India
2. MS, DNB, MRCS (ENT), Apollo First Med Hospitals, Chennai, Tamil Nadu, India
3. Department of Community Medicine KAPV Government Medical College, Trichy, Tamil Nadu, India
4. Department of Neurosurgery, Neurosurgery Clinic, Birgunj, Nepal