Full text available from East Europe, Central Europe Database: 01/01/2010 to present
Full text available from Research Library: 01/01/2010 to present

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Full text available from PRISMA Database with HAPI Index: 01/01/2005 to present
Full text available from PRISMA Database with HAPI Index: 01/01/2005 to 01/31/2016

Full text available from Continental Europe Database: 01/01/2008 to 2 years ago
Full text available from Research Library: 01/01/2008 to 2 years ago