1. USF Health Voice Center, Department of Otolaryngology–Head and Neck Surgery University of South Florida Tampa Florida U.S.A.
2. University of Southern California Los Angeles California U.S.A.
3. USC Voice Center, Department of Otolaryngology–Head and Neck Surgery University of Southern California Los Angeles California U.S.A.
4. Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine University of Southern California Los Angeles California USA