AUTHOR=Jakovljevic Mihajlo (., Varjacic Mirjana TITLE=Commentary: Do health care workforce, population, and service provision significantly contribute to the total health expenditure? An econometric analysis of Serbia JOURNAL=Frontiers in Pharmacology VOLUME=8 YEAR=2017 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2017.00033 DOI=10.3389/fphar.2017.00033 ISSN=1663-9812