Table 1 Example of search strategy in Medline (Ovid) database

#1

[ti.]

(concuss* OR commotio* cerebr* OR cerebral* commotio* OR mtbi) or ((mild OR minor OR minimal) adj3 (traumatic brain OR tbi))

#2

[ab.]

(concuss* OR commotio* cerebr* OR cerebral* commotio* OR mtbi) OR ((mild OR minor OR minimal) adj3 (traumatic brain OR tbi))

#3

[Mesh]

Brain injuries, traumatic/

#4

[Mesh]

Brain concussion/

#5

#6

[pt.]

Systematic review

#7