id	domain	url
cannabis-16	dx.doi.org	http://dx.doi.org/10.26828/cannabis.2018.01.005
cannabis-16	monitoringthefuture.org	http://monitoringthefuture.org/pubs.html#mon
cannabis-16	davidakenny.net	http://davidakenny.net/cm/mediate.htm#ie
cannabis-16	creativecommons.org	https://creativecommons.org/licenses/by/4.0
cannabis-16	creativecommons.org	https://creativecommons.org/licenses/by/4.0