1 Liver Center and Gastroenterology Division, Massachusetts General Hospital, Boston, Massachusetts, USA
2 Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
3 Department of Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
4 Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts, USA
Correspondence: Raymond T. Chung, MD, Liver Center and Gastroenterology Division, Massachusetts General Hospital, 55 Fruit St., Boston, Massachusetts 02114, USA. E-mail: [email protected]
SUPPLEMENTARY MATERIAL accompanies this paper at http://links.lww.com/AJG/A938
Received 11 October 2013; accepted 4 February 2014
published online 15 April 2014