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      Number of patients served overall and by service typeNumber of patients served overall and by service type. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0256908
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      Number of social service referrals, follow up attempts and completionsNumber of social service referrals, follow up attempts and completions https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0256908