; cohortSamples
(fn [cohort limit]
    (map :value
      (query
        {:select [:%distinct.value]
         :from [:dataset]
         :join [:field [:= :dataset.id :dataset_id]
                :code [:= :field_id :field.id]]
         :limit limit
         :where [:and [:= :cohort cohort]
                      [:= :field.name "sampleID"]]})))