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这潜在救生指南现在可以电子。

This potentially lifesaving guide, newly revised and updated, gives you instant access to the information you need to spot a serious medical condition before it’s too late. No matter what the symptom—wavy or distorted vision, a child’s wheezing, a severe sore throat, or an irregular pulse—it offers up-to-date information on possible diagnoses and invaluable advice on when you should seek medical help.