полиэтилен хаягдлыг нунтаглах
smc nib нунтаглах машин Thieme E JournalsEndoscopy Full Text Introduction Acute upper gastrointestinal hemorrhage UGIH is a common condition worldwide that has an estimated annual incidence of 40−150 cases per 100 000 population frequently leads to hospital admission and has significant associated morbidity and mortality ...