id	domain	url
eblip-18055	creativecommons.org	http://creativecommons.org/licenses/by‐nc‐sa/2.5/ca/)
eblip-18055	creativecommons.org	http://creativecommons.org/licenses/by‐nc‐sa/2.5/ca
eblip-18055	dx.doi.org	http://dx.doi.org/10.1136/bmj.328.7451