What was the condition of Elly Koss on 2009/1/8?
condition on 2009/1/8 refers to DESCRIPTION from conditions where START = '2009-01-08';
SELECT T2.description FROM patients AS T1 INNER JOIN conditions AS T2 ON T1.patient = T2.PATIENT WHERE T1.first = 'Elly' AND T1.last = 'Koss' AND T2.START = '2009-01-08'