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Dong F, Hoefsloot LH, Schelen AM, Broeders CA, Meijer Y, Veerman AJ, Touw IP, Löwenberg B.Dong F, et al. Among authors: touw ip.Proc Natl Acad Sci U S A. 1994 May 10;91(10):4480-4. doi: 10.1073/pnas.91.10.4480.Proc Natl Acad Sci U S A. 1994.PMID: 7514305Free PMC article.