Letter to the Editor: Editorial. Issue 12 (December 2019) - Simkin, Jennifer; Bronstone, Amy; Chapple, Andrew; Clement, R. Carter; Cohen-Rosenblum, Anna; Czarny-Ratajczak, Malwina; Dasa, Vinod; Hilliard, Colette; King, Andrew; Krause, Peter; Marrero, Luis; Maupin, Robert; et al.