title: Donald F. Steiner MD, 1930-2014: discoverer of proinsulin.
authors.affiliation: Department of Medicine, Section of Endocrinology, Diabetes, and Metabolism, and l-philipson@uchicago.edu.
authors.forename: Louis H
authors.initials: LH
authors.lastname: Philipson
authors.affiliation: Department of Medicine, Section of Endocrinology, Diabetes, and Metabolism, and.
authors.forename: Graeme
authors.initials: G
authors.lastname: Bell
authors.affiliation: Dean and Executive Vice President, Division of Biological Sciences, The Prtizker School of Medicine, University of Chicago, Chicago, IL 60637.
authors.forename: Kenneth S
authors.initials: KS
authors.lastname: Polonsky