TY  - RPRT
TI  - Experience with upper gastrointestinal endoscopy in Ibadan.
AU  - E A Lewis
AU  - E A Aderoju
AU  - E A Ayoola
AU  - M A Atoba
PY  - 1978
UR  - https://pubmed.ncbi.nlm.nih.gov/735402/
ID  - 735402
ER  -