Authors’ contributions
RD: Study conceptualization and design, methodology, validation, drafting original manuscript, reviewing, and editing. KZHL: Principal investigator, study conceptualization and design, obtaining funding, critically revising manuscript for important intellectual content. NG: drafting original manuscript, reviewing and editing. NM: Study conceptualization and design, methodology, validation, drafting original manuscript, reviewing, and editing. JLC: Co-investigator, study conceptualization and design, drafting and revising manuscript for important intellectual content. KMPF: Relevant intellectual contributions to project (particularly for audiometric assessments), and manuscript revisions. LB: Providing the cognitive training program, revising manuscript for important intellectual content. ML: Development of the cognitive training program. NAP: Relevant intellectual contributions to project and manuscript, statistical design. WW: Relevant intellectual contributions to project (particularly for visual assessments), and manuscript revisions. NSO: Relevant intellectual contributions to project (particularly for mobility assessments), and manuscript revisions. JPG: Revising manuscript for important intellectual content. All authors contributed to refinement of the study protocol and approved the final manuscript.