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974 items of data are available, covering 974 participants, encoded using Data-Coding 2171.
Counts of participants/items last updated 19 Jul 2022.
Source of the first code mapped to 3-character ICD10 H74, and whether this code occurs in other source(s) with the same or a later event date. The code corresponds to "other disorders of middle ear and mastoid".
See Resource 593 for details of how the first source was assigned.