What Causes a Cold Sore? Factors can include injury or stress.
Be Careful While Using Oxygen Therapy. Avoid sources of combustion.
Recognizing COPD. Possible symptoms of chronic obstructive pulmonary disease.
Treating a Nosebleed. They're common during childhood, doctors say.
Easing the Discomfort of Bronchitis. Take steps to help ease coughing.
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