TY  - RPRT
TI  - Gastrointestinal endocrine tumors.
AU  - G J Krejs
PY  - 1987
DO  - 10.1016/0002-9343(87)90421-9
UR  - https://pubmed.ncbi.nlm.nih.gov/3035921/
ID  - 3035921
ER  -