what was patient 3710's first operation time since 1 year ago?
select procedures_icd.charttime from procedures_icd where procedures_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 3710 ) and datetime(procedures_icd.charttime) >= datetime(current_time,'-1 year') order by procedures_icd.charttime asc limit 1