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The familiar sounds of your heart are made by the heart's valves as they open and close.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.