Table 2

Geographical location of the studies

CountryLocations
UKBritain (National)23 26 32 38
England (National)31
Nottingham20
Wirral and Portsmouth/South East Hampshire21
Sheffield25
Scotland8
Cornwall27
London28 29
Brent and Avon30
Northern Ireland35
NetherlandsNational33
Amsterdam, Rotterdam and South Limburg9
South Limburg34
Amsterdam and Gooi37
DenmarkFrederiksborg County12
Ringkjøbing County24
Copenhagen36
NorwayTrondheim22
Vestfold39
BelgiumAntwerp10