claim: PBS is exclusively a film distributor.
evidence: 100,000,000 Guinea Pigs  : Dangers in Everyday Foods , Drugs , and Cosmetics is a book written by Arthur Kallet and F.J. Schlink first released in 1933 by the Vanguard Press and manufactured in the United States of America .. Arthur Kallet. Arthur Kallet. Vanguard Press. Vanguard Press. F.J. Schlink. F.J. Schlink. Its central argument propounds that the American population is being used as guinea pigs in a giant experiment undertaken by the American producers of food stuffs and patent medicines and the like .. guinea pigs. guinea pigs. patent medicines. patent medicines. Kallet and Schlink premise the book as being `` written in the interest of the consumer , who does not yet realize that he is being used as a guinea pig ... ''