Erratum: Three differentiation states risk-stratify bladder cancer into distinct subtypes (Proc Natl Acad Sci USA (2012) 109, 6 (2078-2083) DOI: 10.1073/pnas.1120605109)

Jens Peter Volkmer, Debashis Sahoo, Robert K. Chin, Philip Levy Ho, Chad Tang, Antonina V. Kurtova, Stephen B. Willingham, Senthil K. Pazhanisamy, Humberto Contreras-Trujillo, Theresa A. Storm, Yair Lotan, Andrew H. Beck, Benjamin I. Chung, Ash A. Alizadeh, Guilherme Godoy, Seth P. Lerner, Matt Van De Rijn, Linda D. Shortliffe, Irving L. Weissman, Keith S. Chan