(2)Such standard deviations should be laid down only in relation to the Zorgverzekeringswet (Health Care Insurance Act) providing for a mandatory basic health insurance ( basisverzekering ) in the Netherlands (hereinafter the ‘health risk equalisation system in the Netherlands’). According to a survey of the European Insurance and Occupational Pensions Authority, the health risk equalisation system in the Netherlands is the only such system within the Union that meets the criteria set out in Articles 109a(4) and (5) of Directive 2009/138/EC.