Letters Elvis Impersonator? + See all authors and affiliations Science 18 Oct 1991:Vol. 254, Issue 5030, pp. 357DOI: 10.1126/science.254.5030.357-c PRISCILLA WILKINS STEVENSFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.