. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Dig Liver Dis. 2012 Jun 19;44(10):819–826. doi: 10.1016/j.dld.2012.05.013
© 2012 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.