[1] Nemours Alfred I duPont Hosp Children, Nemours Biomed Res, 1600 Rockland Rd, Wilmington, DE 19803 USA
[2] Univ Delaware, Dept Linguist & Cognit Sci, Newark, DE USA
[3] Univ Delaware, Coll Hlth Sci, Commun Sci & Disorders, Newark, DE USA
[4] West Chester Univ, Dept Commun Sci & Disorders, W Chester, PA USA
[5] Nemours Alfred I duPont Hosp Children, Dept Audiol, Wilmington, DE 19803 USA
[6] Salus Univ, Georges Osborne Coll Audiol, Elkins Pk, PA USA