ARTICLE PDF ADDITIONAL INFORMATION The online version of the original article can be found at 10.1038/262387a0 RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS

ARTICLE Erratum. _Nature_ 262, 820 (1976). https://doi.org/10.1038/262820c0 Download citation * Published: 26 August 1976 * Issue Date: 26 August 1976 * DOI: https://doi.org/10.1038/262820c0

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