New England Journal of Medicine (1990) - Comments
pubmed: 2169587  doi: 10.1056/nejm199010043231403  issn: 0028-4793  issn: 1533-4406 

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Robert O. Dillman, Stephen L. Seagren, Kathleen J. Propert, Julio Guerra, Walter L. Eaton, Michael C. Perry, Robert W. Carey, Emil F. Frei, Mark R. Green