Word on the street has it you should replace your toothbrush after suffering from a cold, the flu or a bout of strep throat. That may not be necessary -- at least when it comes to sore throats, according to a new study.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...