TY - GEN AU - Welch,C E AU - Hedberg,S E TI - Polypoid lesions of the gastrointestinal tract. second edition SN - 0025-1062 PY - 1976///0209 KW - Adolescent KW - Adult KW - Aged KW - Child KW - Child, Preschool KW - Colonic Neoplasms KW - diagnosis KW - Endoscopy KW - Female KW - Gastrointestinal Neoplasms KW - Humans KW - Intestinal Polyps KW - Male KW - Middle Aged KW - Neoplasms, Multiple Primary KW - pathology KW - Peutz-Jeghers Syndrome KW - Polyps KW - Rectal Neoplasms KW - Sigmoidoscopy KW - Stomach Neoplasms KW - Syndrome N1 - Publication Type: Journal Article ER -