The following, in order:

• <title-group> Title Group

• <contrib-group> Contributor Group

• Any combination of:

  • <product> Product Information

  • <supplementary-material> Supplementary Material Metadata

• <permissions> Permissions, zero or one

• <self-uri> URI for This Same Article Online, zero or more

• Any combination of:

  • Related Material Elements

    • <related-article> Related Article Information

    • <related-object> Related Object Information

• <abstract> Abstract, one or more

• <kwd-group> Keyword Group, zero or more

• <funding-group> Funding Group, zero or more

• <conference> Conference Information, zero or more