Results are reported from the first two adequate trials of the PDE-5 inhibitor vardenafil using a stopwatch to precisely measure erection duration in men with ED. Two randomized, multicenter, ...

Time stopped 200 years ago … then it was restarted, stopped again, and reset. No, this isn't some obscure retrospective application of relativity, we're talking about the invention of the stopwatch.

In sports, times of fractions of a second can mean the difference between first and second place or setting a new world record. When training, it is imperative to know where you stand, and as helpful ...