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This silent 8mm film, made by German doctor Horst Bickel, documents his discovery of the effects of phenylalanine on a patient with phenylketonuria (PKU), and features the first ever dietary treatment for PKU. Filmed at The Children’s Hospital, Birmingham, England, 1954-1955. Introduced by Dr. Harvey Levy,
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Elsevier Ltd. for making the pdf’s of this article available (letter to Iain Chalmers from Laura Pritchard, 14 May 2014). For conditions of further reproduction, see here.