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HSR Citation Abstract

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Data Alert: Period of Service Variable

Hynes DM, de Groot K, Tarlov E. Data Alert: Period of Service Variable. [Website]. 2009 Feb 2.

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Minor modifications to improve data quality for Period of Service data in the Outpatient Visit (SF) Medical SAS dataset. Changes will appear on the Monday 2/2/2009 production run of the SAS SF dataset and all subsequent updates.

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