[1] Ludwig Boltzmann Inst Hlth Technol Assessment, A-1090 Vienna, Austria
[2] Univ Oslo, Inst Basic Med Sci, Oslo, Norway
[3] Univ London Imperial Coll Sci Technol & Med, Inst Microparasite Epidemiol, London, England
[4] Norwegian Knowledge Ctr Hlth Serv, Oslo, Norway
[5] Univ Hlth Sci Med Informat & Technol, Dept Publ Hlth Med Decis Making & HTA, Hall In Tirol, LT, Austria
[6] Harvard Univ, Sch Publ Hlth, Dept Hlth Policy & Management, Ctr Decis Sci, Boston, MA 02115 USA
[7] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Inst Technol Assessment, Boston, MA USA
[8] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Dept Radiol, Boston, MA USA