"The first paper on this subject was publish in 2011. It is not one of my Nature papers, but it motivated a New & Views in Nature.
Mirabel et al.: https://arxiv.org/abs/1102.1891v1
The N&V in Nature by Haiman: https://ui.adsabs.harvard.edu/#abs/2011Natur.472...47H/abstract
Motivated by the tentative detection by EDGES of a HI 21cm line trough redshifted at z=17 (78 MHz), I am finishing the first draft of a manuscript along the ideas in my recent review: https://doi.org/10.1017/S1743921319002084"