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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.