@article{doi:10.1001/jama.1939.02800450056030,
title = {STudies on the changing incidence of peptic ulcer of the stomach and duodenum},
journal = {Journal of the American Medical Association},
volume = {113},
number = {20},
pages = {1834},
year = {1939},
doi = {10.1001/jama.1939.02800450056030},
URL = { + http://dx.doi.org/10.1001/jama.1939.02800450056030},
eprint = {/data/Journals/JAMA/7385/jama_113_20_030.pdf}
}