what was the last operation time of patient 61003 on their last hospital visit?
select procedures_icd.charttime from procedures_icd where procedures_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 61003 and admissions.dischtime is not null order by admissions.admittime desc limit 1 ) order by procedures_icd.charttime desc limit 1