The Nobel Prize in Physiology or Medicine is awarded yearly by the Nobel Assembly at the Karolinska Institute for outstanding discoveries in physiology or medicine. It is one of the five Nobel Prizes prizes that, in accordance with Alfred Nobel's 1895 will, are awarded "to those who, during the preceding year, have conferred the greatest benefit to humankind". Nobel Prizes are awarded in the fields of Physics, Medicine or Physiology, Chemistry, Literature, and Peace. A sixth prize, for Economic Sciences, was established in 1968 by Sveriges Riksbank in memory of Alfred Nobel.