what is the maximum total cost of a hospital involving a laboratory test for uric acid, urine since 5 years ago?
select max(t1.c1) from ( select sum(cost.cost) as c1 from cost where cost.hadm_id in ( select labevents.hadm_id from labevents where labevents.itemid in ( select d_labitems.itemid from d_labitems where d_labitems.label = 'uric acid, urine' ) ) and datetime(cost.chargetime) >= datetime(current_time,'-5 year') group by cost.hadm_id ) as t1