AUTHOR=Hilari Caroline , Franco Margarita 

TITLE=What is Needed to Improve Food Sales in Schools? Food Vendors’ Opinion from El Salvador

JOURNAL=Frontiers in Public Health

VOLUME=3

YEAR=2015

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2015.00168

DOI=10.3389/fpubh.2015.00168

ISSN=2296-2565