Middle ear infections are one of the most common childhood problems.

什么是中耳炎？ 中耳炎是儿童中最常见的疾病之一。

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Otitis media is one of the most common childhood infections and may result from a variety of underlying problems.

中耳炎是儿童最常见的感染之一，并可能会导致从各种相关问题。

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Doctors say frequent headaches and migraines are among the most common childhood health complaints, yet the problem gets surprisingly little attention from the medical community.

医生说，频繁的头疼和偏头疼是最为常见的儿科疾病之一。至今这个问题还没引起医学界的足够重视。

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The most common childhood dream job for women was a teacher (11.4%).

FORBES: What Common Dream Jobs Actually Pay

The rate of leukaemia, the most common childhood cancer, is highest among Latinos, but white children and teenagers have the highest overall cancer rates in America.

ECONOMIST: Children and cancer

The researchers determined that kids who attend day care and play groups decrease their risk of developing the most common type of childhood leukemia by 30 percent.

CNN: Day care decreases leukemia risk