1 Medical Intensive Care Unit, Maricopa Medical Center, Phoenix, AZ 85008, USA; College of Medicine, Mayo Clinic, Scottsdale, AZ, USA; University of Arizona College of Medicine, Phoenix, AZ, USA. Electronic address: RichardW_Carlson@dmgaz.org.
2 Advanced ICU Care, 747 Third Avenue, Suite 28 A, New York, NY 10017, USA. Electronic address: cscurlock@icumedicine.com.