Authors: Susan L Mitchell; Joan M Teno; Dan K Kiely; Michele L Shaffer; Richard N Jones; Holly G Prigerson; Ladislav Volicer; Jane L Givens; Mary Beth Hamel Journal: N Engl J Med Date: 2009-10-15 Impact factor: 91.245
Authors: D S Sanders; M J Carter; J D'Silva; G James; R P Bolton; P J Willemse; K D Bardhan Journal: Am J Gastroenterol Date: 2002-09 Impact factor: 10.864