instruction: what is the number of patients whose primary disease is aortic valve insuffiency\aortic valve replacement /sda and procedure short title is other skin & subq i & d?
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN procedures ON demographic.hadm_id = procedures.hadm_id WHERE demographic.diagnosis = "AORTIC VALVE INSUFFIENCY\AORTIC VALVE REPLACEMENT /SDA" AND procedures.short_title = "Other skin & subq i & d"