Correction to: GTS-21, an α7nAChR agonist, increases pulmonary bacterial clearance in mice by restoring hyperoxia-compromised macrophage function - Ravikumar A. Sitapara; Alex G. Gauthier; Vivek S. Patel; Mosi Lin; Michelle Zur; Charles R. Ashby; Lin L. Mantell (BMC, 2021)