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July 7, 1951


JAMA. 1951;146(10):928. doi:10.1001/jama.1951.03670100048014

Total population x-ray surveys of the chest have been extensively prosecuted in this country in the campaign against pulmonary tuberculosis. The problems of quality of roentgen reproduction, of reliability of roentgen interpretation, of thoroughness of follow-up, and of reduction of local incidence of tuberculosis have been studied to some extent and has been commented on by various groups to a considerable extent. However, no really comprehensive review of a long term, total population study has yet been made in this country. A recent follow-up report on a total population survey of the island of Gotland, made in 1943 and analyzed in succeeding years by Lonnerblad,1 is of interest. Gotland was almost an ideal location for a successful total population survey. The island is comparatively remote and has a negligible immigration factor. It is about seven hours by sea from the mainland of Sweden.

In this mass photofluorographic survey, 56,964

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