Masanori Umatani, Makoto Ogawa, Kiyohito Hosokawa, Chieri Kato, Eri Okajima, Toshihiko Iwahashi, Hidenori Inohara. Skin Acceleration Levels Estimated by a Neck-surface Accelerometer during Phonation Are Affected by The Mechanical Properties of The Anterior Cervical Skin. Journal of voice : official journal of the Voice Foundation. 2021
Masanori Umatani, Makoto Ogawa, Kiyohito Hosokawa, Chieri Kato, Eri Okajima, Toshihiko Iwahashi, Hidenori Inohara. The Feasibility of Gastroesophageal Manometry for Continuously Evaluating the Degree of Expiratory Effort During Successful Crescendo Phonation. Journal of voice : official journal of the Voice Foundation. 2021
Kiyohito Hosokawa, Toshihiko Iwahashi, Mio Iwahashi, Shinobu Iwaki, Chieri Kato, Misao Yoshida, Daichi Yoshida, Itsuki Kitayama, Masanori Umatani, Naoki Matsushiro, et al. The Significant Influence of Hoarseness Levels in Connected Speech on the Voice-Related Disability Evaluated Using Voice Handicap Index-10. Journal of voice : official journal of the Voice Foundation. 2020
Masanori Umatani, Makoto Ogawa, Toshihiko Iwahashi, Kiyohito Hosokawa, Chieri Kato, Hidenori Inohara. The Feasibility of a Neck-Surface Accelerometer for Estimating the Amount of Acoustic Output During Phonation Regardless of the Difference in the Mouth Configuration. Journal of voice : official journal of the Voice Foundation. 2020