[1] Leiden Univ, Med Ctr, Dept Med Decis Making, NL-2300 RC Leiden, Netherlands
[2] Leiden Univ, Med Ctr, Dept Surg, NL-2300 RC Leiden, Netherlands
[3] TNO Qual life, BU Prevent & Care, Sect Hlth Promot, Leiden, Netherlands
[4] Bronovo Hosp, Dept Surg, The Hague, Netherlands