id	domain	url
ihlr-21707	doi.org	http://doi.org/10.18060/3911.0033
ihlr-21707	doi.org	https://doi.org/10.1080/01947648.2012.714328
ihlr-21707	doi.org	http://doi.org/10.1377/hlthaff.24.6.1684