Write SQL query to solve given problem: List the ids of all the patients with condition that has a prevalence percentage of 18.8%.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT DISTINCT T1.PATIENT FROM conditions AS T1 INNER JOIN all_prevalences AS T2 ON lower(T2.ITEM) = lower(T1.DESCRIPTION) WHERE T2."PREVALENCE PERCENTAGE" = CAST(18.8 AS float)