1. Division of Otolaryngology‐Head & Neck Surgery, Department of SurgeryCommonwealth Health Center Saipan CNMI
2. Division of Otolaryngology–Head & Neck Surgery, Department of SurgeryUniversity of California, San Diego San Diego California U.S.A.
3. Department of Otolaryngology–Head & Neck SurgeryUniversity of Texas Southwestern Dallas Texas U.S.A.
4. Department of Otolaryngology–Head & Neck SurgeryThe Chinese University of Hong Kong Shatin HK