@misc{indiciae4af5c7538e21, title = {The immigrant worker's ulcer.}, author = {A Lonardo and A Grisendi and M Frazzoni and G Della Casa and M Pulvirenti and L Melini}, year = {1994}, url = {https://pubmed.ncbi.nlm.nih.gov/8187997/}, note = {Source identifier: 8187997} }