1. Cochrane Austria, Department for Evidence-based Medicine and Evaluation, University for Continuing Education Krems (Danube University Krems), Krems, Austria (I.S., A.D., D.L., I.M., K.T., E.P., M.F., I.K.)
2. Faculty of Health and Medicine, University for Continuing Education Krems (Danube University Krems), Krems, Austria (R.E.)
3. Cochrane Austria, Department for Evidence-based Medicine and Evaluation, University for Continuing Education Krems (Danube University Krems), Krems, Austria, and RTI International, Research Triangle Park, North Carolina (G.G.).