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This study is an attempt to determine the extent to which vaccines are used therapeutically by physicians in the United States.
From its results we do not draw conclusions with regard to the value or lack of value of vaccines in treatment. We have wished merely to ascertain what opinion practicing physicians have formed of this method and how that opinion has affected the present use of vaccines. Accordingly, questionnaires were sent to physicians as follows:
To 1,038 members of the societies comprising the Congress of American Physicians and Surgeons except the American Ophthalmologic Society, the American Neurological Association, the American Association of Pathologists and Bacteriologists, and the Society of Tropical Medicine.
To 1,181 physicians in the larger cities of Michigan (excepting Detroit).
To all physicians of Indianapolis, 707 in all.
To 1,500 physicians of New York and Brooklyn not members of group A.
Group A is made up of
HEKTOEN L, IRONS EE. VACCINE THERAPYRESULT OF A QUESTIONNAIRE TO AMERICAN PHYSICIANS. JAMA. 1929;92(11):864–869. doi:10.1001/jama.1929.02700370012003