From left, Robert and his wife Cathy Brown looking over a waterfall in Tennessee after a hike. (Photo by Robert Brown) (IMAGE)

University of Texas Health Science Center at Houston

From left, Robert and his wife Cathy Brown looking over a waterfall in Tennessee after a hike. (Photo by Robert Brown)

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From left, Robert and his wife Cathy Brown look over a waterfall in Tennessee after a hike. (Photo by Robert Brown)

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(Photo by Robert Brown)

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