[1] Univ Continuing Educ Krems, Dept Evidence Based Med & Evaluat, Vienna, Austria
[2] Univ Continuing Educ Krems, Cochrane Austria, Vienna, Austria
[3] Austrian Natl Publ Hlth Inst, Competence Ctr Hlth Promot & Hlth Care, Vienna, Austria
[4] Univ Vienna, Fac Psychol, Vienna, Austria