EBSCO - MEDLINE and CINAHL
XB (frequent N3 user* OR regular user* OR repeat user* OR frequent flyer* OR frequent call* OR frequent N3 attend)
OVID – EMBASE and EMCARE
(regular User* OR repeat user* OR frequent flyer* OR frequent call* OR (frequent adj3 user*) OR (frequent ADJ3 attend*)).ti,ab
Updated 02 April 2025