This article talks briefly about the history of PNPs, the core competencies, and how there is an increase need for NP as health care providers.

http://onlinelibrary.wiley.com.proxy.library.emory.edu/doi/10.1002/2327-6924.12289/epdf

http://kff.org/medicaid/issue-brief/tapping-nurse-practitioners-to-meet-rising-demand-for-primary-care/

This article does a wonderful job in portraying the shortage of primary care health professionals with visuals/graphs/charts. It demonstrates the urgent need for primary care providers and how APRNs can mediate this issue. However, these shortage areas will truly benefit if APRNs have a full scope of practice.