Once you’ve visited the participating booths and answered the questions on the back of the card correctly, drop the card in the Discovery Zone bins at the front of the Exhibit Hall. There is one drawing a day for an iPod Touch. Monday’s winners were Marlyn Woo, M.D., of UCLA, and Srikanth Pendyala, M.D., of the University of Illinois at Chicago. Sunday’s winners were Nithya Iyer, M.D., of the Cleveland Clinic Foundation, and Kim Kelly, R.R.T., of  Vanier College.