[1] McGill Univ, H Bruce Williams Craniofacial & Cleft Surg Unit, Montreal Childrens Hosp, Ctr Hlth, Montreal, PQ H3H 1P3, Canada
[2] McGill Univ, Div Plast & Reconstruct Surg, Ctr Hlth, Montreal, PQ H3H 1P3, Canada
[3] Louisiana State Univ, Dept Oral & Maxillofacial Surg, New Orleans, LA USA