関連ワード:  is it better to use a spacer with an inhaler    is it better to use a spacer with ventolin    why is it important to use a spacer with an inhaler    when to use a spacer with an inhaler    is it better to use an inhaler with or without a spacer    why would you use a spacer with an inhaler    should i use a spacer with my inhaler  
結果 : is it better to use a spacer with an inhaler