instruction: how many times had patient 57899 since 2105 received a aortocor bypas-2 cor art?
response: SELECT COUNT(*) FROM procedures_icd WHERE procedures_icd.icd9_code = (SELECT d_icd_procedures.icd9_code FROM d_icd_procedures WHERE d_icd_procedures.short_title = 'aortocor bypas-2 cor art') AND procedures_icd.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 57899) AND STRFTIME('%y', procedures_icd.charttime) >= '2105'