[1] Maastricht Univ, Med Ctr, Dept Plast Reconstruct & Hand Surg, POB 5800, NL-6202 AZ Maastricht, Netherlands
[2] Maastricht Univ, Med Ctr, Dept Gen Surg, NL-6202 AZ Maastricht, Netherlands
[3] Maastricht Univ, Dept Epidemiol, NL-6202 AZ Maastricht, Netherlands