õ ǼҴ 21 12ȸ Ͽ ¾ ǰ Ͽ ȫ .
躸DZⱸ(WHO) α 1/3 ǰȰ õ ְ, 1/3 ܸ ġ , 1/3 ȯڵ ġḦ ȭ ϴ.
Ͽ ؼ Ͽ Ģ ϱ, äҳ Ļϱ, ¥ ʰ ź ϱ, ҷ ֵ ϱ, 5ȸ Ϸ 30 ϱ, ǰ ü ϱ, 㿹ϱ, Ȱϱ, ۾ Ģ Ű, ϱ⸦ õϴ ߿ϴ.
Ư, ߰ 90%̻ ġ ϰ, 5 Ҹ , , , , ڱþ ˻ε ߰ ִٰ ϸ ߴ.
ڴ Ȧ Ƿޱڿ ǰ谡 50%̴. ȯ Ƿ ޱ ؼ ڷμ ݵ 5 ƾ ϹǷ ߰ϰ ġ ߴ.
ƿ, Ȧ 20 ̻ ڱðξ , 40 ̻ , , ̸, 50 ̻ʹ ų ִ.
Ǽ ڴ “ Ȱ ӿ ǰ õϸ հ ִ” ϸ, “ ȫ ֹ ǰ Ͽ濡 ּ ϰڴ.” ߴ.
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