TY - RPRT TI - Evoked potential changes produced by positioning for retromastoid craniectomy. AU - B L Grundy AU - P T Procopio AU - P J Jannetta AU - A Lina AU - E Doyle PY - 1982 DO - 10.1227/00006123-198206010-00019 UR - https://pubmed.ncbi.nlm.nih.gov/7110556/ ID - 7110556 ER -