what are the five most common lab tests for the patients who received a circumcision before in the same hospital encounter until 2 years ago?
select d_labitems.label from d_labitems where d_labitems.itemid in ( select t3.itemid from ( select t2.itemid, dense_rank() over ( order by count(*) desc ) as c1 from ( select admissions.subject_id, procedures_icd.charttime, admissions.hadm_id from procedures_icd join admissions on procedures_icd.hadm_id = admissions.hadm_id where procedures_icd.icd9_code = ( select d_icd_procedures.icd9_code from d_icd_procedures where d_icd_procedures.short_title = 'circumcision' ) and datetime(procedures_icd.charttime) <= datetime(current_time,'-2 year') ) as t1 join ( select admissions.subject_id, labevents.itemid, labevents.charttime, admissions.hadm_id from labevents join admissions on labevents.hadm_id = admissions.hadm_id where datetime(labevents.charttime) <= datetime(current_time,'-2 year') ) as t2 on t1.subject_id = t2.subject_id where t1.charttime < t2.charttime and t1.hadm_id = t2.hadm_id group by t2.itemid ) as t3 where t3.c1 <= 5 )