__( 'Extra Small' ), 'xl' => __( 'Extra Large' ), 'xxl' => __( 'Large Format' ), ) ); }; add_filter( 'image_size_names_choose', 'bheku_add_image_size_names' ); function bheku_add_responsive_image_sizes($sizes, $size) { $width = $size[0]; // default to return if condition is not met return '(max-width: ' . $width . 'px) 100vw, ' . $width . 'px'; }; add_filter('wp_calculate_image_sizes', 'bheku_add_responsive_image_sizes', 10 , 2); function bheku_declare_responsive_image_sizes($attr, $attachment, $size) { return $attr; }; add_filter('wp_get_attachment_image_attributes', 'bheku_declare_responsive_image_sizes', 10 , 3); LitCovid at Dadhaleh Institute 
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Curated literature hub for scientific publications on COVID-19 updated daily and categorized by different research topics and geographic locations.

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