TY  - GEN
AU  - Classen,M
TI  - [Colonic tumors]
SN  - 0012-0472
PY  - 1977///0622
KW  - Colonic Neoplasms
KW  - genetics
KW  - Humans
KW  - Intestinal Polyps
N1  - Publication Type: Letter
ER  -