Collection sites
Participants were identified and enrolled at a physician’s or study coordinator’s office at one of the following sites: Atlantic Health System, NJ; Mt. Sinai Hospital, NY; Radiology Associates of Albuquerque, NM; South Texas Veterans Healthcare System, TX; and Waterbury Pulmonary Associates, CT. Each site had received institutional approval to participate in the study. Samples were collected from April 2018 till November 2019 (LSRII sample set) and from July 2020 till November 2021 (Navios sample set).