The above animation is used with permission and is based on "HyperHeart" by Dan Ricks. This HyperHeart project was supervised by Dr. Donald Blumenthal. Derek Cowan created the computer graphics, Brandan Hull wrote the tutorials, and the Knowledge Weavers provided computer support. http://www.healcentral.org/healapp/showMetadata?metadataId=38242 http://library.med.utah.edu/kw/pharm/