1. Smell and Taste Clinic, Department of Otorhinolaryngology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
2. Department of Otolaryngology - Head and Neck Surgery, Philippine General Hospital, University of the Philippines, Manila, Philippines
3. Department of Otolaryngology - Head and Neck Surgery, Asian Hospital and Medical Center, Muntinlupa, Philippines