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Johnson, Stephen B., David A. Campbell, Michael Krauthammer, P. Karina Tulipano, Eneida A. Mendonça, Carol Friedman, et George Hripcsak. A Native XML Database Design for Clinical Document Research. American Medical Informatics Association, 2003.

Johnson, Stephen B., et al. A Native XML Database Design for Clinical Document Research. American Medical Informatics Association, 2003.