Canada-DONATE study protocol: a prospective national observational study of the medical management of deceased organ donors. - D'Aragon F; Dhanani S; Lamontagne F; Cook DJ; Burns K; Akhtar A; Chassé M; Frenette AJ; Keenan S; Lize JF; Kutsogiannis DJ; Kramer A; et al. (BMJ open, 2017)