Competing interests
LUNG
ESH has received grant support from the National Institutes of Health and the Department of Defense and clinical trial support from Fisher & Paykel Healthcare; MTD reports grants from the American Lung Association, Department of Defense, and National Institutes of Health, consulting fees from AstraZeneca, GlaxoSmithKline, Novartis, Pulmonx, and Teva. The remaining authors have declared that no conflict of interest exists.