1. Department of Surgery, Weill Cornell Medical Center, New York, New York; Harvard University; Boston Massachusetts U.S.A
2. Department of Otolaryngology; Walter Reed Army Medical Center; Washington DC
3. Otolaryngology Private Practice; Manhattan Beach; California U.S.A
4. Department of Radiology; Children's Hospital Boston; Boston Massachusetts U.S.A
5. Division of Emergency Medicine; Children's Hospital Boston; Boston Massachusetts U.S.A
6. Department of Otolaryngology; Children's Hospital Boston; Boston Massachusetts U.S.A.