09/05/11 01:37:46 nMwm/5sR0
>>182
> Those who wore a mask while their children were sick were four times less likely
> than non-wearers to become infected by their sick children.
URLﾘﾝｸ(www.timesonline.co.uk)
ところで、マスクは効果が無いとするソースはまだかね？
09/05/11 01:37:46 nMwm/5sR0
>>182
> Those who wore a mask while their children were sick were four times less likely
> than non-wearers to become infected by their sick children.
URLﾘﾝｸ(www.timesonline.co.uk)
ところで、マスクは効果が無いとするソースはまだかね？