Supplement to: Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitisSanyal, A JChalasani, NKowdley, K VAuthor informationThis appendix has been provided by the authors to give readers additional information about their work.New England Journal of Medicine 362(18), May 6, 2010.Copyright © 2010 Massachusetts Medical Society. All rights reserved.