American Medical Association, Journal of the American Medical Association, 14(295), p. 1641
DOI: 10.1001/jama.295.14.1641-a
American Medical Association, Journal of the American Medical Association, 14(295), p. 1641
DOI: 10.1001/jama.295.14.1641-b
American Medical Association, Journal of the American Medical Association, 14(295), p. 1641
DOI: 10.1001/jama.295.14.1642-a
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