1. Cochrane Austria, Department for Evidence-based Medicine and Evaluation; Danube University Krems; Krems Austria
2. Clinical Research Center; Fundación Valle del Lili; Cali Colombia
3. Paediatrics, Department of Clinical Sciences Lund; Lund University, Skåne University Hospital; Lund Sweden
4. Cochrane Sweden, Department of Research and Education; Lund University, Skåne University Hospital; Lund Sweden