The need for standardization of ICD-9-CM E code groupings by cause and intent.
Berenholz
G
G
D000043:Abstracting and Indexing; D006801:Humans; D008499:Medical Records / Q000145:classification*; D011159:Population Surveillance; D012106:Research; D014481:United States / Q000453:epidemiology; D014947:Wounds and Injuries / Q000145:classification / Q000453:epidemiology* / Q000209:etiology