ECG stamps- F2U without credits :-)

I made a collection of ECG stamps from this post on Tumblr (also links to the stamps if they don't load here). 15 images total. Free to use, credits not require but very much appreciated! Here they are on Postimages as an album. They're also all on my profile with my other blue stamps if you'd rather steal them to feel evil. Which one fits your profile? Have fun!