1 Pragmatic Evidence Lab, Research Centre for Clinical Neuroimmunology and Neuroscience Basel, University Hospital Basel and University of Basel, Basel, Switzerland.
2 Department of Health, Eastern Switzerland University of Applied Sciences, St Gallen, Switzerland.
3 Department of Clinical Research, University Hospital Basel and University of Basel, Basel, Switzerland.
4 Institute of Health and Nursing Science, Medical Faculty, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
5 University Medical Library, University of Basel, 4051 Basel, Switzerland.
6 University Medical Library, University of Basel, 4051 Basel, Switzerland christian.appenzeller@unibas.ch.