1. Mayo Clinic Alix School of Medicine, Rochester, MN 55905, USA
2. Department of Hospital Medicine, Mayo Clinic Health System, Eau Claire, WI 54703, USA
3. Department of Emergency Medicine, Mayo Clinic, Rochester, MN 55905, USA
4. Department of Pulmonary Medicine, Mayo Clinic Health System, Eau Claire, WI 54703, USA
5. Department of Infectious Disease, Mayo Clinic Health System, Eau Claire, WI 54703, USA