Correction to: BMC Health Serv Res (2018) 18:629

https://doi.org/10.1186/s12913-018-3434-x

In the original publication of this article [1], an author’s name needs to be revised from Katrina Nelson to Adrianne Katrina Nelson, and this author's affiliation address should be "641 Huntington Ave., Boston, MA 02115".  The origial article has been corrected for the author's name.