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4k
hd
aed
person
performing
cpr
practice
machine
training
kit
pressing
hands
adult
pad
floor
concept
emergency
help
cardiology
defibrillation
equipment
mannequin
medical
oxygen
portable
medicine
rescue
unit
connector
resuscitation
aid
doctor
hospital
instructor
procedure
chest
heart
urgency
assistance
teaching
exercise
massaging
breathing