Not to get all medical on you, but. . .
http://www.google.com/search?client=safari&rls=en&q=LD50&ie=UTF-8&oe=UTF-8
and
http://www.google.com/search?client=safari&rls=en&q=ed50&ie=UTF-8&oe=UTF-8
Nice, thanks for the references :-)
Not to get all medical on you, but. . .
http://www.google.com/search?client=safari&rls=en&q=LD50&ie=UTF-8&oe=UTF-8
and
http://www.google.com/search?client=safari&rls=en&q=ed50&ie=UTF-8&oe=UTF-8
Nice, thanks for the references :-)