The New England Journal of Medicine Volume 349:570-582 August 7, 2003 Number 6
Martin Körbling, M.D., and Zeev Estrov, M.D.
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http://content.nejm.org/cgi/reprint/349/6/570.pdf
Or read fulltext from:http://content.nejm.org/cgi/content/full/349/6/570
