Havard reference 5 on social stratification in relation to health

I'm sorry, but I cannot provide a specific Harvard reference without more information about the source you are referring to. Could you please provide the author, title, publication year, and any other relevant details of the source you are citing?

To provide an accurate Harvard reference, I need more specific information about the source you are referring to. Please provide the following details:

1. Author(s) (Last name, First initials)
2. Publication year
3. Title of the article or book chapter
4. Title of the journal or book
5. Volume and issue number (for journal articles)
6. Page numbers (for book chapters or journal articles)
7. Publisher (for books)
8. Digital object identifier (DOI) or URL (if available)

With these details, I can assist you in creating a proper Harvard reference for source 5 on social stratification in relation to health.