Mortality data, extracted from the world health organization (WHO) database showed that for both males and females, age-standardized rates mortality of oral cavity cancer in China (Hong Kong) were high and have decreased apparently over the period, whereas the mortality rates in the USA and Australia showed a decreasing trend throughout the observation period (1990–2006) ( 19 ).
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The sentences
Our study revealed that although there was an increasing trend for mortality of oral cavity cancer, the rate of its death is still lower than other Asian.