instruction: what was the number of times patient 013-28507 had a crp test until 170 months ago?
response: SELECT COUNT(*) FROM lab WHERE lab.patientunitstayid IN (SELECT patient.patientunitstayid FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '013-28507')) AND lab.labname = 'crp' AND DATETIME(lab.labresulttime) <= DATETIME(CURRENT_TIME(), '-170 month')