STM32F103 ADC 8 bits

What is the correct way to use the ADC with only 8 bits?

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    ADC_InitStruct.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStruct.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStruct.ADC_ExternalTrigConv = DISABLE;
    ADC_InitStruct.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStruct.ADC_NbrOfChannel = 1;
    ADC_InitStruct.ADC_ScanConvMode = DISABLE;
    ADC_Init(ADC1, &ADC_InitStruct);
    ADC_Cmd(ADC1, ENABLE);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_7Cycles5);