San Francisco can have institute By Chris Weinkopf Editorial-page editor Although Mayor James Hahn fumbled badly in his efforts to get the California Institute for Regenerative Medicine to set up shop in Los Angeles, his bungling could prove to be more a blessing than a curse. Seventeen cities fought over the chance to play host to the new bureaucracy that's charged with doling out $3 billion for embryonic stem cell research. They dreamed of corporate fat cats and academic geniuses gathering in their midst, cutting huge deals and drawing worldwide acclaim as they triumphantly cure one malady after the next....