- Correspondence to Dr Ricardo Niklas Werner, Klinik für Dermatologie, Venerologie und Allergologie, Division of Evidence based Medicine (dEBM), Charité—Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany;
- Received 5 December 2016
- Revised 12 April 2017
- Accepted 22 April 2017
- Published online 24 November 2017.
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