Letter: Carcinoembryonic antigen test: facts and fantasy.
D002272:Carcinoembryonic Antigen; D003110:Colonic Neoplasms / Q000175:diagnosis; D006801:Humans; D009369:Neoplasms / Q000175:diagnosis*; D012004:Rectal Neoplasms / Q000175:diagnosis; D013997:Time Factors; D014481:United States; D014486:United States Food and Drug Administration
D002272:Carcinoembryonic Antigen