@misc{indiciae12aef7ca0e43, title = {Experience with upper gastrointestinal endoscopy in Ibadan.}, author = {E A Lewis and E A Aderoju and E A Ayoola and M A Atoba}, year = {1978}, url = {https://pubmed.ncbi.nlm.nih.gov/735402/}, note = {Source identifier: 735402} }