Symposium: Screening for colorectal cancer.
D003110:Colonic Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D004739:England; D005602:France; D005860:Germany, West; D006801:Humans; D008403:Mass Screening; D009780:Occult Blood; D012004:Rectal Neoplasms / Q000175:diagnosis / Q000517:prevention & control*; D013548:Sweden; D014481:United States