Keywords & Synonyms | Keywords & Synonym | Keywords & Synonym | Keywords & Synonym | |||
flu vaccin* OR influenza vaccin* OR flu immuniz* OR flu immunis* OR influenza immuniz* OR influenza immunis* | AND | perception* OR perspective* OR view* OR opinion* OR attitude* OR feel* | AND | Older people* OR elder* OR elderly OR retired OR older adults* | AND | refus* OR uptake OR decision OR decid* OR choice* OR choos* |