[1] Univ Fed Minas Gerais, Fac Med, Belo Horizonte, MG, Brazil
[2] Univ British Columbia, Fac Med, Dept Anesthesiol Pharmacol & Therapeut, Vancouver, BC, Canada
[3] Bowen Univ, Fac Basic Clin Sci, Dept Pharmacol & Therapeut, Iwo, Nigeria
[4] Univ British Columbia, Div Crit Care, Vancouver, BC, Canada
[5] Univ British Columbia, Div Resp Med, Vancouver, BC, Canada