instruction: how many patients whose diagnoses long title is neonatal jaundice associated with preterm delivery and drug route is pb?
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.long_title = "Neonatal jaundice associated with preterm delivery" AND prescriptions.route = "PB"