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Hopf JM, Boehler CN, Luck SJ, Tsotsos JK, Heinze HJ, Schoenfeld MA.Hopf JM, et al. Among authors: luck sj.Proc Natl Acad Sci U S A. 2006 Jan 24;103(4):1053-8. doi: 10.1073/pnas.0507746103. Epub 2006 Jan 12.Proc Natl Acad Sci U S A. 2006.PMID: 16410356Free PMC article.