Purpose : To observe the short-term and long-term curative effects of Wei-Yang-An Capsule on peptic ulcer.

目的： 观察胃疡安胶囊治疗消化性溃疡近期及远期疗效。

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His injury leaves his main rival, two-time world champion Yang Wei of China, as hot favourite to win gold.

BBC: Injured Hamm forced to withdraw

Zhang Jiewin and Yang wei, the top seeds, overcame Huang Sui and Gao Ling in an all-Chinese women's doubles final.

CNN: Britain, U.S. share sailing medals

Zhang and Yang Wei won 7-15 15-4 15-8 but China were denied a medal sweep by Ra Kyung-min and Lee Kyung-won of South Korea, who beat China's Zhao Tingting and Wei Yili 10-15 15-9 15-7 in the bronze medal match.

CNN: Britain, U.S. share sailing medals