Gastrointestinal bleeding in elderly patients with ulcerative lesions of the main, Mucosal erosion mainly middle-aged group.

老年组消化道出血以溃疡性病变为主，中青年组以黏膜糜烂为主。

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If the surrounding diners are mostly middle-aged group of successful people, many of whom suffer from 'three high', so we can locate the operating health regimen.

如果周围的食客群多是中老年成功人士，这些人中不少患有‘三高’，所以我们可以将经营定位在健康养生。

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Researchers say it may take far less exercise than people had thought to lower the risk of heart disease especially for the highest risk group, middle-aged men.

研究人员表示，想要减低罹患心脏病的机率，并不像一般人所认为的要做许多运动，尤其是针对高危险群的中年男人而言。

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Overall, the illiteracy rate in the young and middle-aged population group has fallen from over 80 per cent down to about 5 per cent.

UNESCO: Community Learning Centres (CLC) Programme

Menke says it's a combination of the Olympics -- triathlon made its debut in the 2000 Sydney games -- a growing group of middle-aged competitors looking to reclaim their athleticism, and a desire for fitness-conscious camaraderie.

CNN: Everyday athletes embracing triathlon

It is one reason why the Five Star Party was strongly supported by the "lost generation" of younger voters who find themselves shut out of the employment market by a older, protected group of middle-aged and older workers.

BBC: Italian voters declare opposition to austerity