[1] Leiden Univ, Med Ctr, Leiden, Netherlands
[2] Haga Hosp, The Hague, Netherlands
[3] Groene Hart Hosp, Gouda, Netherlands
[4] Franciscus Hosp, Roosendaal, Netherlands
[5] Reinier de Graaf Gasthuis, Delft, Netherlands
[6] Bronovo Hosp, The Hague, Netherlands
[7] MCH, The Hague, Netherlands
[8] Admiraal de Ruyter Hosp, Goes, Netherlands
[9] Zorgsaam Hosp, Terneuzen, Netherlands