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  • ARTICLE August 07, 1981

    Michael J. Eckardt, PhD; Thomas C. Harford, PhD; Charles T. Kaelber, MD, DPH; Elizabeth S. Parker, PhD; Laura S. Rosenthal; Ralph S. Ryback, MD; Gian C. Salmoiraghi, MD, PhD; Ernestine Vanderveen, PhD; Kenneth R. Warren, PhD

    JAMA. 1981; 246(6):648-666. doi: 10.1001/jama.1981.03320060050022