Issues with the citation expander:
- with citations expanded from pmid, it repeats the PubMed url in the url field;
- it doesn't give the url to the article/abstract on the journal's website where this is available;
- it repeats all the names of the authors, instead of using "et al." after a certain number;
- it doesn't offer jstor;
- it regularly isn't able to expand from the doi.