Correction to: Nature Astronomy https://doi.org/10.1038/s41550-018-0521-1, published online 3 July 2018.
In the version of this Correspondence originally published, the wrong paper was given for ref. 1; instead of ‘Shields, G. A. Nature 273, 519–520 (1978)‘ it should have been ‘Shields, G. A. Nature 272, 706–708 (1978)’. This has now been corrected.
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Antonucci, R. Author Correction: Old news on quasar viscosity. Nat Astron 2, 688 (2018). https://doi.org/10.1038/s41550-018-0546-5
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DOI: https://doi.org/10.1038/s41550-018-0546-5
