instruction: how many patients whose diagnoses short title is urin tract infection nos and drug route is sl?
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id INNER JOIN prescriptions ON demographic.hadm_id = prescriptions.hadm_id WHERE diagnoses.short_title = "Urin tract infection NOS" AND prescriptions.route = "SL"