Cinahl strategy for finding studies from the UK

This is based on the Medline filter in Ayiku, L.et al.(2017) ‘The Medline UK filter: development and validation of a geographic search filter to retrieve research about the UK from OVID Medline’,Health Information and Libraries Journal 34(3), pp.200-216.  That filter isdiscussed in another post.I have tested it to see if it results in error messages (it does not) but it is not yet validated.  The Medline filter it is based on has been validated - see the article referenced above for details.This Cinahl filter does not specify fields, so searches all fields.  In line S4, gb with no punctuation and g.b. with punctuation retrieve different results, so I have included both.S1           (MH " United Kingdom+ " )S2           (national health service* or nhs*)           S3           (english not ((published or publication* or translat* or written or language* or speak* or literature or citation*) N4 english))S4           (gb or g.b. or britain* or (british* not " british columbia " ) or uk or u.k. or united kingdom* or (england* not " new england " ) or northern ireland* or northern irish* or scotland* or scottish* or ((wales or " south wales " ) not " new south wales " ) or welsh*)    S5 ...
Source: Browsing - Category: Databases & Libraries Tags: CINAHL literature searching Source Type: blogs