1. Department of ENT and Head and Neck Surgery, Jigme Dorji Wangchuck National Referral Hospital, Thimphu, Bhutan
2. Department of Internal Medicine, Jigme Dorji Wangchuck National Referral Hospital, Thimphu, Bhutan
3. Kidu Mobile Medical Unit, His Majesty’s People’s Project, Thimphu, Bhutan