Studies have shown that the vast majority of patients who undergo the procedure are either symptom-free or have significant improvement in their GERD symptoms.

研究显示，绝大多数病人在手术后反流症状得到了显著改善或者症状完全消失。

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Crosby had his first rib removed from each side and was soon able to stop taking the warfarin. He has been symptom-free for four years.

克罗斯比两边的第一根肋骨都被摘除，很快他就停止服用华法林阻凝剂，他已经四年没有在发病了。

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People infected with HIV may have no symptoms for 10 years or longer, but they can still transmit the infection to others during this symptom-free period.

一些感染HIV的人可能10年以上都不会出现症状，但是这些人还是可以感染其他人。

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"I'm convinced I'll be symptom free in the next four or five days, " Hughes said Wednesday.

WSJ: Hughes could be out 2 weeks due to bulging disk

Studies show that when patients are symptom free, their disease is not progressing.

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They studied 2, 000 people with each condition and compared them with 3, 000 symptom-free individuals.

ECONOMIST: Molecular medicine: Peekaboo | The