Article History
Received: 16 April 2019
Accepted: 31 July 2019
First Online: 24 August 2019
Compliance with ethical standards
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: AGR has received lecture honoraria from Merck Serona and Janssen-Cilag, and independent research funding and lecture honoraria from Novo Nordisk and Sanofi Pasteur MSD. All other authors declare no competing interests.