The Voice Handicap Index (VHI): Development and Validation Barbara H. Jacobson, Alex Johnson, Cynthia Grywalski, Alice Silbergleit, Gary Jaconsen, Michael S. Benninger
American Journal of Speech-Language Pathology, Vol 6(3), 66-70, 1997, The Voice Handicap Index is reprinted with permission from all authors and ASHA. Copyright 1997-2001 American Speech-Language-Hearing Association