Wilson, Roger https://orcid.org/0000-0002-6043-7306
Article History
Received: 21 May 2018
Accepted: 9 July 2019
First Online: 17 July 2019
Ethics approval and consent to participate
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: No competing financial interest. The author is a non-salaried director of Sarcoma Patients Euronet Assoc/e.V., a non-profit organisation based in Wolfersheim, Germany and noted in the text.