Perhaps this link could be helpful: https://scholar.google.no/scholar?q=decentralization+of+healthcare+systems&hl=no&as_sdt=0&as_vis=1&oi=scholart&sa=X&ei=fiv4VMuCJ43aaseagZgC&ved=0CBoQgQMwAA

There are few journals that focus on medical decision making from a policy perspective. See the premiere journal in this area: 

http://mdm.sagepub.com/

This journal is a bit more focused on medical informatics in the decision making process:

http://www.biomedcentral.com/bmcmedinformdecismak/sections/clinical_decisionmaking_knowledge_support_systems_and_theory

I hope this helps

Ariel

"Heath Care Management Science" and "Operations Research for Health Care"

http://www.journals.elsevier.com/health-policy/

http://www.biomedcentral.com/bmchealthservres

http://www.health-policy-systems.com

http://www.joppp.org

http://www.dovepress.com/drug-healthcare-and-patient-safety-journal