aDenver Health Medical Center, Denver, Colorado

bUniversity of California San Francisco-East Bay, Oakland, California

cUniversity of Florida, Gainesville, Florida, USA

Correspondence to Erin Vanzant, MD, MHPE, FACS, FCCM, FASPEN, CNSC, Denver Health Medical Center, Denver, CO, PO Box 100108, Gainesville, FL 32610-008, USA. Tel: +1 303 602 1830; e-mail: [email protected]