1. the Department of Otolaryngology-Head and Neck Surgery; Rabin Medical Center; Petah Tikva Israel
2. Sackler Faculty of Medicine; Tel-Aviv University; Tel Aviv Israel
3. Department of Otolaryngology; University of Miami Miller School of Medicine; Miami Florida
4. USC Voice Center, Department of Otolaryngology-Head and Neck Surgery; University of Southern California; Los Angeles California U.S.A