HTML5 RDFa and Microdata document

https://identifiers.org/pmc/PMC7925531
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  - PubMed Central
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  - PMC7925531
- http://purl.org/spar/cito/cites
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  - https://identifiers.org/wikipathways/WP3635
  - https://identifiers.org/wikipathways/WP727
  - https://identifiers.org/wikipathways/WP430
  - https://identifiers.org/wikipathways/WP455
  - https://identifiers.org/wikipathways/WP3301
  - https://identifiers.org/wikipathways/WP3407
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