1. From the Department of Otolaryngology, Eastern Virginia Medical School, Norfolk, Virginia, Birmingham, Alabama, Washington, DC, and New York, New York
2. the University of Alabama, Norfolk, Virginia, Birmingham, Alabama, Washington, DC, and New York, New York
3. the Children's National Medical Center, Norfolk, Virginia, Birmingham, Alabama, Washington, DC, and New York, New York
4. and Cornell Medical Center, Norfolk, Virginia, Birmingham, Alabama, Washington, DC, and New York, New York