instruction: Count the number of patients who had urgent hospital admission that were diagnosed with other preterm infants of 1,750-1,999 grams.
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id WHERE demographic.admission_type = "URGENT" AND diagnoses.long_title = "Other preterm infants, 1,750-1,999 grams"