TY - RPRT TI - High-frequency electrostimulation hearing after mastoidectomy. AU - M Hegewald AU - R Heitman AU - M L Wiederhold AU - J C Cooper AU - G A Gates PY - 1989 DO - 10.1177/019459988910000108 UR - https://pubmed.ncbi.nlm.nih.gov/2493616/ ID - 2493616 ER -