1. Department of Respiratory Medicine, Allergy and Clinical Immunology
2. Department of Otorhinolaryngology, and
3. Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
4. Shino-Test Corporation, Sagamihara, Japan; and
5. Division of Medical Biochemistry, Department of Biomolecular Sciences, Saga Medical School, Saga, Japan