###HUMAN: dysphagia nec what does it stand for?, ###ASSISTANT: SELECT d_icd_diagnoses.long_title FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'dysphagia nec' UNION SELECT d_icd_procedures.long_title FROM d_icd_procedures WHERE d_icd_procedures.short_title = 'dysphagia nec'