Estrogen regulates the expression of SARS-CoV-2 receptor ACE2 in differentiated airway epithelial cells - Stelzig, K E; Canepa-Escaro, F; Schiliro, M; Berdnikovs, S; Prakash, Y S; Chiarella, S E (Am J Physiol Lung Cell Mol Physiol, 2020)