1. Department of Otorhinolaryngology and Head‐Neck Surgery KMCH Institute of Health Sciences and Research Coimbatore India
2. Department of Nuclear Medicine KMCH Institute of Health Sciences and Research Coimbatore India
3. Department of Otorhinolaryngology and Head‐Neck Surgery, Teaching Block All India Institute of Medical Sciences New Delhi India
4. Department of Nuclear Medicine Teaching Block All India Institute of Medical Sciences New Delhi India