num.八十一
Methods Six hundred and eighty one patients suffering from refl uxesophagitis were divided into elderly and non elderly groups. 方法将本院10年来681例反流性食管炎患者分为老年组和非老年组，对两组的患病率、病变程度、病理结果、并存疾病进行了比较。
eight thousand eight hundred and eighty one (=8881) 八千八百八十一
eight thousand one hundred and eighty one (=8181) 八千一百八十一
eight thousand three hundred and eighty one (=8381) 八千三百八十一
eight thousand two hundred and eighty one (=8281) 八千二百八十一
five thousand five hundred and eighty one (=5581) 五千五百八十一
