instruction: provide me the number of patients on succinylcholine prescription who have intervertebral disc disorder with myelopathy, unspecified region diagnoses.
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 = "Intervertebral disc disorder with myelopathy, unspecified region" AND prescriptions.drug = "Succinylcholine"