Swatek, Kirby N.
Usher, Joanne L.
Kueck, Anja F.
Gladkova, Christina
Mevissen, Tycho E. T.
Pruneda, Jonathan N.
Skern, Tim
Komander, David
Article History
Received: 15 March 2018
Accepted: 17 July 2019
First Online: 15 August 2019
Change Date: 27 August 2019
Change Type: Update
Change Details: Owing to a technical error, this Letter was not published online on 14 August 2019, as originally stated, and was instead first published online on 15 August 2019. The Letter has been corrected online.
Competing interests
: The authors declare no competing interests.