There are multiple definitions:

1. brainstem auditory evoked response(English)

   • BSER
   • Auditory system, Electrophysiology, Brain (dys)function

2. balloon-assisted endplate reduction(English)

   • this procedure and subsequent calcium phosphate cement augmentation may prevent pedicle screw constructs that fail in the presence of severe vertebral body comminution
   • Spine (or spinal cord), Surgery
   • https://doi.org…nee.2013.11.044