[1] McGill Univ, Montreal Childrens Hosp, Harvey E Beardmore Div Pediat Surg, Hlth Ctr, Montreal, PQ, Canada
[2] McGill Univ, Montreal Childrens Hosp, Div Pediat Radiol, Hlth Ctr, Montreal, PQ, Canada
[3] McGill Univ, Montreal Childrens Hosp, Div Pediat Cardiol, Hlth Ctr, Montreal, PQ, Canada
[4] McGill Univ, Montreal Childrens Hosp, Div Pediat Respirol, Hlth Ctr, Montreal, PQ, Canada
[5] Shriners Hosp Children Canada, Chest Wall Anomaly Ctr, Montreal, PQ, Canada