Fails to make items like PMC2296548 because it is unclear which journal item Wikidataintegrator should use. The ISSN is not unique (there are two different items for the BMJ for example)

Error from wikidataintegrator:
`
More than one wikidata ID found for P236 0007-1447: [{'item': {'value': 'http://www.wikidata.org/entity/Q546003', 'type': 'uri'}}, {'item': {'value': 'http://www.wikidata.org/entity/Q28464921', 'type': 'uri'}}]
`