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THEODORE B. BARRINGER Jr., M.D.; Mortimer Warren, M.D.
Arch Intern Med (Chic). 1912;IX(6):657-664. doi:10.1001/archinte.1912.00060180019002.
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The question as to the significance of albumin and casts in the urine of apparently healthy men is a much-mooted one, the answering of which, from a clinical point of view, has been difficult on account of the scarcity of cases in hospital and private work, and the impossibility of following them through a number of years. During the late nineties several of the large New York insurance companies began to insure men with this condition, and since then records of a large number of such cases have accumulated. It was through the courtesy of one of these companies that we were given an opportunity to investigate the above-mentioned problem under very promising conditions.

The material placed at our disposal consisted of 396 men, residents of New York City, who were insured during 1900-1901. As far as an ordinary physical examination could determine, they were normal at that time except


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