That animals can be protected against rickets by the use of cod liver oil and ultraviolet rays is an established fact. It has also been clearly shown that cod liver oil and sunlight exert a great influence in the cure of rickets. Whether these measures are sufficient to prevent rickets in infants in a community is the problem on which we are working in the demonstration in New Haven. It is my purpose to set forth briefly the plan of the study and to offer a preliminary discussion of the results.
The demonstration was started in October, 1923, for a three year period by the United States Children's Bureau in conjunction with the pediatric department of the Yale School of Medicine and with the active cooperation of the local health organizations.1 A district of the city was selected having a population of approximately 13,500, one third of which were
ELIOT MM. THE CONTROL OF RICKETS: PRELIMINARY DISCUSSION OF THE DEMONSTRATION IN NEW HAVEN. JAMA. 1925;85(9):656–663. doi:10.1001/jama.1925.02670090012004
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