Erratum: Directed evolution of excited state lifetime and brightness in FusionRed using a microfluidic sorter. Issue 9 (2nd December 2019) - Manna, Premashis; Hung, Sheng-Ting; Mukherjee, Srijit; Friis, Pia; Simpson, David M; Lo, Maria; Palmer, Amy E; Jimenez, Ralph