@article{article605, title = {Assessment of 99 Cases with Upper Gastrointestinal System Bleeding}, author = {Erkuş, E. and Helvacı, A. and Bodur, Ö. and Özsoy, N.}, journal = {European Archives of Medical Research}, year = {2013}, volume = {29}, pages = {76-80}, doi = {10.5222/otd.2013.076} }