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. 2020 Aug 5;17(16):5663. doi: 10.3390/ijerph17165663

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Total contrast errors detected through Wave and checked manually. Source: own elaboration. Note: 1-(I) URL 1-Start; 2-(Ti), URL 2-Page Type; 3-(Ta), URL 3-Page Tables; 4-(F), URL 4-Page with forms; 5-(B), URL 5-Finder; 6-(V), URL 6-Video.