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About the article
Published Online: 2018-10-12
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: We would like to thank the Directorate of Research and Community Services of Universitas Islam Indonesia (DPPM UII) for funding this research.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.