50In so far as concerns the proportionality of the interference found to exist, the Court recalls that, according to settled case-law, the principle of proportionality requires that measures adopted by European Union institutions do not exceed the limits of what is appropriate and necessary in order to attain the objectives legitimately pursued by the legislation in question; when there is a choice between several appropriate measures recourse must be had to the least onerous, and the disadvantages caused must not be disproportionate to the aims pursued (Case C-343/09 Afton Chemical [2010] ECR I-7027, paragraph 45, and Joined Cases C-581/10 and C-629/10 Nelson and Others [2012] ECR, paragraph 71 and the case-law cited).
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