One third of those without children said a son, two-thirds had no preference and only a residual said a daughter.
三分之一无子女的受调查者选儿子，三分之二的人没有偏好，只有不几个人选择了女儿。
In societies where four or six children were common, a boy would almost certainly come along eventually; son preference did not need to exist at the expense of daughters.
在一个家家基本上都有四至六个孩子的社会，一个家庭几乎肯定会有一个男孩；想要儿子不必以牺牲女儿为代价。
Son preference can lead to the undernutrition of girls that is associated with increased risk of childhood illnesses and death.
重儿轻女可能会导致女童营养不良，加剧女童生病和死亡风险。
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