Equal contributor status

Two or more authors may be tagged as having contributed equally. This has nothing to do with the contributions that are actually listed for these authors.

User Stories

Author

As an author, I want to be able to see which authors have been tagged as equal contributors so that I can check this information is correct.
As an author, I want to be able to add equal contribution status to two or more authors so that I can ensure this information is present.
As an author, I want to be able to remove equal contribution status from an author so that I can correct any errors.
As an author I want to be able to indicate different sets of equal contributions so that I can show different groups of equal contributors within the author list.
- For instance, authors A and B contributed equally, and Authors D and G contributed equally, but they are different sets of contributors.

Production staff

As production staff I want to check that, for every author with an equal contribution status, there is another author with the same status so I can make sure there are no un-matched pairs.
As production staff I want to check that, when there are multiple groups of equal contributing authors, each author is put in the same group as the correct other author(s)

But what if . . . ?

Considerations

EJP sometimes outputs unmatched tagging, so one author can have equal contributions but no other author has this.
Each author can be equal contributors with one or more of the other authors.

XML requirements

Identified in two ways - with an equal-contrib="yes" attribute and with a xref which points to a footnote in the author notes. This footnote can contain any necessary text, but is necessary as it allows numerous equal authorship statuses to be indicated.

<article-meta>
      …
      <contrib-group content-type="author">
            <contrib  contrib-type="author" equal-contrib="yes">
                  <name>
                        <surname>Gilbert</surname>
                        <given-names>James F</given-names>
                  </name>
                  <xref ref-type="fn" rid="equal-contrib1">†</xref>
            </contrib>
            <contrib  contrib-type="author" equal-contrib="yes">
                  <name>
                        <surname>Atherden</surname>
                        <given-names>Frederick P</given-names>
                  </name>
                  <xref ref-type="fn" rid="equal-contrib1">†</xref>
            </contrib>
            …
            <contrib  contrib-type="author" corresp="yes" equal-contrib="yes">
                  <name>
                        <surname>Harrison</surname>
                        <given-names>Melissa</given-names>
                  </name>
                  <xref ref-type="fn" rid="equal-contrib2">‡</xref>
            </contrib>
            <contrib  contrib-type="author" corresp="yes" equal-contrib="yes">
                 <name>
                        <surname>Aufreiter</surname>
                        <given-names>Michael</given-names>
                  </name>
                  <xref ref-type="fn" rid="equal-contrib2">‡</xref>
            </contrib>
      </contrib-group>
      …
      <author-notes>
            <fn fn-type="con" id="equal-contrib1">
                  <label>†</label>
                  <p>These authors contributed equally to this work</p>
            </fn>
            <fn fn-type="con" id="equal-contrib2">
                  <label>‡</label>
                  <p>These authors also contributed equally to this work</p>
            </fn>
      </author-notes>
      …
</article-meta>

Flexibility

We are open to changing this capture. Here are the PMC guidelines, which do not account for our use-case of more than 1 'group' of equal contributions:

Screenshot 2019-04-11 at 14 10 45

Taken from: https://github.com/elifesciences/TextureRequirements/issues/15

libero / editor