阳转阴试验为防治小儿血管迷走性晕厥提供了理论和实验依据，饮 水试验是一种简单有效可行的防治措施。
Positive-to-negative test provides rational and experimental evidence. Drinking-water is a simple and effective measure for the prevention of vasovagal syncope.
阳转阴试验为防治小儿血管迷走性晕厥提供了理论和实验依据，饮 水试验是一种简单有效可行的防治措施。
Positive-to-negative test provides rational and experimental evidence. Drinking-water is a simple and effective measure for the prevention of vasovagal syncope.
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