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Samuel D, Cheng H, Riley PW, Canutescu AA, Nagaswami C, Weisel JW, Bu Z, Walsh PN, Roder H.Samuel D, et al. Among authors: walsh pn.Proc Natl Acad Sci U S A. 2007 Oct 2;104(40):15693-8. doi: 10.1073/pnas.0703080104. Epub 2007 Sep 20.Proc Natl Acad Sci U S A. 2007.PMID: 17884987Free PMC article.