The advantages of sound localization and speech perception of bilateral electric acoustic stimulation.

"Declaration of interest: MED-EL supplied EAS systems including implants and speech processors for this clinical trial, because this cochlear implant system had not yet been approved by the Ministry of Health of Japan during the study period. The authors disclosed the above conflict of interest in this clinical research to the Ethics Committee of Shinshu University School of Medicine and received the Committee's approval. Declaration of interest:"

"We thank A.C. Apple-Mathews and Nora Prachar for help in preparing the manuscript. This study was supported by a Health and Labour Sciences Research Grant for Comprehensive Research on Disability Health and Welfare from the Ministry of Health, Labour and Welfare of Japan (S.U.), and by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science and Culture of Japan (S.U.)."