Provide the ID and age of patient with lactate dehydrogenase (LDH) between 100-300 index above the normal range.
age refers to SUBTRACT(year(current_timestamp), year(Birthday)); lactate dehydrogenase (LDH) between 100-300 index above the normal range refers to LDH between 600 and 800;
SELECT DISTINCT T1.ID, STRFTIME('%Y', CURRENT_TIMESTAMP) - STRFTIME('%Y', T1.Birthday) FROM Patient AS T1 INNER JOIN Laboratory AS T2 ON T1.ID = T2.ID WHERE T2.LDH > 600 AND T2.LDH < 800