1. Medicine Man of the Cheyenne Painting by Howard Terpning http://www. firstpeople.us/pictures/Howard Terpning/ls/Howard-Terpning-Medicine- Man-Of-The-Cheyenne.html.
2. Ancient Egypt medicine Days of the Pharaohs. Fresh Look at the Civilization of the Pharaohs http://pharaohsdays. blogspot.com/2010/05/ancient - egypt - medicine.html.
3. Multi - targeted natural products evaluation based on biological activity prediction with PASS;Lagunin;Curr. Pharm. Design,2010
4. Aspirin for the primary prevention of cardiovascular events;Colwell;Drugs Today,2006