Tuy nhiên, ???h?n ch??m?t s??r?i ro ti?m ?n có th??x?y ra thì b?n c?n ph?i l?u ý m?t s??v?n ???sau:Median Age is the normal age from the population. Half with the population is older and the opposite 50 percent is more youthful. Gender is self-described by people today when questioned about their sex at beginning. 40.0K?t n?i m?ng th?t t?t: Hã