[1] Univ Queensland, Brisbane, Qld, Australia
[2] Franziskus Hosp, Berlin, Germany
[3] St Joseph Hosp, Berlin, Germany
[4] Duke Univ, Durham, NC USA
[5] Queen Elizabeth Hosp, Hong Kong, Peoples R China
[6] Meander Med Ctr, Dept Surg, Amersfoort, Netherlands
[7] Aberdeen Royal Infirm, Aberdeen, Scotland
[8] Univ Paris South, Antoine Beclere Hosp, Clamart, France
[9] Catharina Med Ctr, Michelangelolaan, Eindhoven, Netherlands
[10] Georgetown Univ, MedStar Washington Hosp Ctr, Washington, DC USA
[11] Twente Univ, Inst Tech Med, Enschede, Netherlands
[12] UC San Diego Hlth, San Diego, CA USA
[13] Brown Univ, Warren Alpert Med Sch, Providence, RI 02912 USA
[14] Caremeau Univ Hosp, Nimes, France