Unfortunately Dr. Leston did not sign the call sheet which records the treating doctor.
http://www.nationalreview.com/york/york200405041626.asp
Here is some other info about the lies http://swiftvets.eriposte.com/kerrypurpleheart1.htm
Here is some info that describes why people should get a purple heart. Note there is no rule about how serious the wound must be. http://www.slate.com/Default.aspx?id=2105532&
Finally, Republican truth teller Bob Dole in his own book said the following about how he received his first purple heart.
"As we approached the enemy, there was a brief exchange of gunfire. I took a grenade in hand, pulled the pin, and tossed it in the direction of the farmhouse. It wasn't a very good pitch?remember, I was used to catching passes, not throwing them. In the darkness, the grenade must have struck a tree and bounced off. It exploded nearby, sending a sliver of metal into my leg?the sort of injury the Army patched up with mercurochrome and a Purple Heart."
http://www.villagevoice.com/issues/0434/mondo5.php