1 Denver Health and Hospital, Public Health Institute at Denver Health, Denver, CO, USA; Division of General Internal Medicine, University of Colorado, Aurora, CO, USA.
2 Denver Health and Hospital, Public Health Institute at Denver Health, Denver, CO, USA; Division of Infectious Diseases, University of Colorado, Aurora, CO, USA.
3 Denver Health and Hospital, Public Health Institute at Denver Health, Denver, CO, USA; Division of Infectious Diseases, University of Colorado, Aurora, CO, USA. Electronic address: Robert.belknap@dhha.org.