With health care in flux, executives planning new Dallas hospitals say they've had to guess how many beds they'll need for a growing, aging population and the future doctors they'll train over the next three to five decades. In both cases, they guessed bigger. So have officials in Galveston, where UTMB is expanding its capacity with a new teaching hospital to complement the current John Sealy Hospital. The news appears in several Texas media outlets, including the Dallas Morning News and Houston Chronicle.