[1] Univ Montreal, CHU St Justine, Dept Paediat, Montreal, PQ, Canada
[2] Univ Montreal, CHU St Justine, Montreal, PQ, Canada
[3] Univ Montreal, CHU St Justine, Dept Paediat Emergency Med, Montreal, PQ, Canada
[4] CHU St Justine, Clin Eth Unit, Montreal, PQ, Canada
[5] CHU St Justine Res Ctr, Montreal, PQ, Canada