Searching for PMCID field doesn't give results

[Eduardo]

Does anyone know why this queries doesn't return any results?

https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=PMCID:23962577&resultType=core&format=json

https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=PMCID:29303720&resultType=core&format=json

PMCID seems to be a valid field:

https://www.ebi.ac.uk/europepmc/webservices/rest/fields

Thanks,

Eduardo

[parkinm]

Hi Eduardo,

The field is valid, but you need to include 'PMC' as a prefix before the ID number. Further, the two examples are PMIDs, not PMCIDs.

Here's a working example:

https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=PMCID:PMC5844054&resultType=core&format=json

Michael

[Florian Gräf]

I noticed as well that the ids your queried for do not exist as PMCIDs but as PMIDs.

ou can query for them with the ext_id field

https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=ext_id:23962577&resultType=core&format=json
https://www.ebi.ac.uk/europepmc/webservices/rest/search?query=EXT_ID:29303720&resultType=core&format=json

Are those the documents you have been looking for?
Best,

Florian

[Eduardo]

Thanks to both.