id 0640253376
https://w3id.org/oc/meta/id/0640253376

is a

unique identifier

id

10.1186/s12913-015-0924-y

type

doi

Get it in another format: RDF/XML, Turtle, JSON-LD

All these data (independently from the particular representation used) are licensed under a Creative Commons CC0 1.0 Universal.