ABSTRACT - Scientists, technologists, doctors, entrepreneurs and drug company executives gather in Philadelphia for first-ever 'Tedmed' conference, where they explore ramifications of widening array of technological tools that could significantly improve human health and longevity; leaders of medical technology start-up companies represented at conference say they are managing to attract investor interest; photos (M) With his consent, Richard Saul Wurman's personal medical data was discussed, dissected, and portrayed in multicolored graphs and 3-D images before an audience at the first ''Tedmed'' conference here this week.

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