1. Cochrane Austria, Department for Evidence-based Medicine and Evaluation, University for Continuing Education Krems (Danube University Krems), Krems, Austria (I.S., D.L., K.T., A.D., E.P., M.F., I.K.)
2. 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.).