SQL query with subquery does not run

This is the SQL from my Access query which just does not complete but neither does it error.
I am trying to get the 5 most recent episodes (with test T122) for all patients.

SELECT Patients.UnitNumber, Episodes.EpisodeNo, EpisodeTests.TestSet, Episodes.DateCreated, Episodes.RefDoc, Patients.Name, Patients.Add1, Patients.Add2, Patients.Postcode, Patients.DOB, Patients.Sex, Results.TestCode, Results.ResultValue
FROM ((Patients INNER JOIN Episodes ON Patients.UnitNumber = Episodes.UnitNumber) INNER JOIN EpisodeTests ON Episodes.EpisodeNo = EpisodeTests.EpisodeNo) INNER JOIN (TestSetsCodes INNER JOIN Results ON TestSetsCodes.TestCode = Results.TestCode) ON EpisodeTests.TestSet = TestSetsCodes.TestSet
WHERE (((EpisodeTests.TestSet)="T122") AND ((Episodes.DateCreated) In (SELECT TOP 5 E.DateCreated FROM (Episodes as E INNER JOIN EpisodeTests as T ON E.EpisodeNo = T.EpisodeNo)  WHERE (((T.TestSet)="T122") AND ((E.UnitNumber)=Episodes.UnitNumber)) ORDER BY E.DateCreated DESC)));