TY  - GEN
AU  - PARKER,E F
TI  - Difficulties in the diagnosis of carcinoma of the esophagus
SN  - 0003-1348
PY  - 2003///0501
KW  - Carcinoma
KW  - Esophageal Neoplasms
KW  - Humans
N1  - Publication Type: Journal Article
ER  -