instruction: give me the number of patients whose ethnicity is hispanic/latino - puerto rican and diagnoses long title is closed fracture of surgical neck of humerus?
response: SELECT COUNT(DISTINCT demographic.subject_id) FROM demographic INNER JOIN diagnoses ON demographic.hadm_id = diagnoses.hadm_id WHERE demographic.ethnicity = "HISPANIC/LATINO - PUERTO RICAN" AND diagnoses.long_title = "Closed fracture of surgical neck of humerus"