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 typical age with the population. 50 percent with the inhabitants is more mature and the opposite fifty percent is young. Gender is self-noted by people when questioned with regards to their intercourse at birth.Ng??i ch?i c?n chu