Italian heart surgeon Antonio Amodeo holds a tiny titanium pump, the world's smallest artificial heart, which was implanted in a baby, at the Bambino Gesu' Hospital in Rome May 24, 2012. Doctors from Rome's Bambino Gesu' Hospital saved the life of the 16-month-old baby in March with the artificial heart, which weighs only 11 grams, before the infant received an organ donation. REUTERS/Alessandro Bianchi (ITALY - Tags: HEALTH SOCIETY)