For All the People

Letter from M. H. Mills, research associate, British Department of Health and Social Security, to Dr. Berry

asking if Dr. Berry can provide him with information for his study on the economic aspects of flexible fibrotic endoscopes, noting that he has just read Berry's highly authoritative book, Gastrointestinal Pan-Endoscopy, and that he was unable to find any references to controlled studies of various diagnostic techniques

Courtesy National Library of Medicine