@misc{indiciae5e53cdf0ba03, title = {Gastric aphthous ulcers.}, author = {D Parker and J M Findlay and B Selby}, doi = {10.1016/s0140-6736(80)92466-6}, url = {https://pubmed.ncbi.nlm.nih.gov/6109212/}, note = {Source identifier: 6109212} }