@adam3smith, do you know what we usually do in these cases? http://www.eje-online.org/site/misc/For-Authors.xhtml#refs indeed shows "Eds J-C Job & M Pierson", but http://docs.citationstyles.org/en/stable/specification.html#label-in-cs-names says

The optional cs:label element (see label) must be included after the cs:name and cs:et-al elements, but before the cs:substitute element.

So we can't put the label before <name/>. That seems like an oversight, and I couldn't find a ticket to allow it.

that must be a typo in the specs and we don't validate this, so it's OK to allow imo. Otherwise we're in trouble:
We have cs:label before cs:name all over the place, e.g. for pretty much any verb form of the label, see e.g. https://github.com/citation-style-language/styles/blob/master/chicago-fullnote-bibliography.csl#L56

Ah, you're right: https://github.com/citation-style-language/schema/blob/v1.0.1/csl.rnc#L423

Mea culpa. I created a ticket to correct this in the spec: citation-style-language/documentation#45

@sylverestoermann, thanks. I already simplified the style a little by removing some superfluous <group/> elements (they don't add anything if they only have a single child element).

Otherwise, if you're up for it, the main thing you could improve is to rely less on verbatim text labels like prefix="edn " above, and instead use CSL terms, which make styles easier to reuse in other languages, and which can automatically adapt to whether the variable contains a singular or plural value.

E.g. here, you could change <number prefix="edn " variable="edition" suffix=", "/> to

        <group delimiter=" " suffix=", ">
          <text term="edition" form="short"/> 
          <number variable="edition"/>
        </group>

(in this case, because the standard translation for the "short" form of the "edition" in British English is "ed" [see https://github.com/citation-style-language/locales/blob/master/locales-en-GB.xml#L34 ], you'd have to redefine this term as well by adding a locale section after the info section, e.g.

  <locale xml:lang="en">
    <terms>
      <term name="edition" form="short">edn</term>
    </terms>
  </locale>

)

If that's too complicated we can accept the style like this as well.

Thank you for the revisions, I highly appreciate it.

I understand how technically it would be cleaner to use CSL terms, but I have a full-time job as physician, a business on the side and a loving wife and children. So time is sparse and I have to carefully select what to use it for. The journal has not dramatically changed its citation style in the past few years (cf. for example author guidelines in the Wayback Machine) and there likely won't be major changes in the future (especially regarding the abbreviations used). It is also unlikely that localization will be an issue unless maybe the whole scientific community decides to change its lingua franca (which would not happen overnight anyways). So, in essence, the benefit of achieving perfection in technical terms (no change in output) does not warrant the cost (I'm not that adept at CSL that I could do this quickly).

Sure, no problem!

(just to clarify: were not concerned with this journal changing its publishing language, but with being able to reuse (parts of) this CSL style for publications in other languages, which is easier if the style doesn't use hard-coded English text. But it's not that big of a deal here, so don't worry about it.)