Please don't make the same mistake that was repeatedly seen on "E.R." and "House": check with a real doctor as to how a stethescope should be worn. On the previously mentioned shows, the doctors always placed them in their ears facing the back of the head. The ear canals are directed forewards, so the stethescope should also aim foreward for the sound to be transmitted. It was surprising that no one caught the mistake. You can't hear "rales" with the stethescope worn backwards! Pay attention!