Table 3

Inclusion and exclusion criteria

Inclusion criteriaExclusion criteria
  • 1.

    Original research paper

  • 2.

    Developed countries

  • 3.

    Urban area

  • 4.

    English

  • 1.

    Studies not in English

  • 2.

    Rural areas

  • 3.

    Published before 2010

Source(s): Authors’ own work

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