instruction: Find out the number of clinic referred patients who had premature admission and have other anomalies of larynx trachea and bronchus diagnoses.
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id WHERE demographic.admission_location = "CLINIC REFERRAL/PREMATURE" AND diagnoses.short_title = "Laryngotrach anomaly NEC"