QoL	quality of life
RT	radiation therapy
OME	otitis media with effusion
CNS	central nervous system
ALL	acute lymphoblastic leukemia
BMD	bone mineral density
LS	lumbar spine
DXA	dual energy x-ray absorptiometry
CS	corticosteroids
PBT	proton beam radiotherapy
ROS	reactive oxygen species
CI	cochlear implant
BCHD	bone conduction hearing devices
MRI	magnetic resonance imaging