last time patient 60014 was diagnosed with persist postop fistula until 2102?
select diagnoses_icd.charttime from diagnoses_icd where diagnoses_icd.icd9_code = ( select d_icd_diagnoses.icd9_code from d_icd_diagnoses where d_icd_diagnoses.short_title = 'persist postop fistula' ) and diagnoses_icd.hadm_id in ( select admissions.hadm_id from admissions where admissions.subject_id = 60014 ) and strftime('%y',diagnoses_icd.charttime) <= '2102' order by diagnoses_icd.charttime desc limit 1