A single paragraph of about 250 words maximum. For
research articles, abstracts should give a pertinent overview of
the work. We strongly encourage authors to use the following
style of structured abstracts, but without headings: (1)
Background: Place the question addressed in a broad context
and highlight the purpose of the study; (2) Purpose of the
Study: Identify the purpose and objective of the study; (3)
Methods: Describe briefly the main methods or theoretical
framework applied; (4) Results: Summarize the article's main
findings; and (5) Conclusions: Indicate the main conclusions
or interpretations.