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Problem URL: https://www.pnas.org/action/cookieAbsent

Sitemap: https://www.pnas.org/sitemap-index-1.xml
User-agent: *
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Disallow: /search
Disallow: /media
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Disallow: /author/
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Disallow: /doi/citedby
Disallow: /doi/reader
Disallow: /doi/ref
Disallow: /doi/epdf/
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Allow: /action/showJournal
Allow: /action/showXml
Allow: /action/showFeed
Allow: /action/showfeed

User-agent: facebookexternalhit
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User-agent: Twitterbot
Allow: /