instruction: list the ids of all those patients diagnosed with thrombocytopenia - suspected since 6 years ago.
response: SELECT patient.uniquepid FROM patient WHERE patient.patientunitstayid IN (SELECT diagnosis.patientunitstayid FROM diagnosis WHERE diagnosis.diagnosisname = 'thrombocytopenia - suspected' AND DATETIME(diagnosis.diagnosistime) >= DATETIME(CURRENT_TIME(), '-6 year'))