Theranos chief executive Elizabeth Holmes gestures as she speaks at a Wall Street Journal technology conference in Laguna Beach, California on October 21, 2015. The founder of innovative blood test startup Theranos challenged The Wall Street Journal on its own turf about an investigation into the firm's technology. Elizabeth Holmes took to the stage at the prestigious WSJDLive technology conference on the Southern California coast to say the Journal got the story wrong. AFP PHOTO/ GLENN CHAPMAN (Photo by GLENN CHAPMAN / AFP)