[1] Washington Univ, Sch Med, Dept Surg, Div Plast & Reconstruct Surg, St Louis, MO 63101 USA
[2] Univ N Carolina, Dept Orthoped Surg, Chapel Hill, NC USA
[3] Washington Univ, Sch Med, Dept Neurol, St Louis, MO 63101 USA
[4] Washington Univ, Sch Med, Off Continuing Med Educ, St Louis, MO 63101 USA
[5] Univ Toronto, Div Plast & Reconstruct Surg, Dept Surg, Toronto, ON, Canada
[6] Utrecht Univ Med Ctr, Dept Plast Reconstruct & Hand Surg, Utrecht, Netherlands