1. Department of Psychological and Brain Sciences, University of Louisville 1 , 301 Life Sciences Building, Louisville, Kentucky 40292, USA
2. Department of Bioinformatics and Biostatistics, University of Louisville 2 , Louisville, Kentucky 40202, USA
3. The Heuser Hearing Institute and Language Academy 3 , Louisville, Kentucky 40203, USA
4. Department of Otolaryngology-Head/Neck Surgery and Communicative Disorders, Speech-Language Pathology Program, University of Louisville 4 , Louisville, Kentucky 40202, USA