@article{Sezgin2007_75773,
author={Orhan Sezgin and ENGIN ALTINTAS and ANIL TOMBAK},
title={Effects of seasonal variations on acute upper gastrointestinal bleeding and its etiology},
year={2007},
journal={Turkish Journal of Gastroenterology},
issn={1300-4948},
volume={18},
number={3},
url={http://search/yayin/detay/75773}
}