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Ong Hong Kei

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Ong Hong Kei
How many hours does a baby spend in a baby walker that will delay its first step by up to 4 days ?
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Ong Hong Kei
For how long has a brush been in use that would reduce its plague removing ability up to 30 Per cent than a new one ?
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Ong Hong Kei
Less than how many hours of sleep a night would run a person 2 to 3 times the risk of heart attacks ?

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