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Declaration of interest
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
Additional information
Funding
The authors have received grants from the University of Leuven [KULEUVEN GOA 2014-10], the European Foundation for the Study of Diabetes [EFSD Sanofi 2014], and the Research Fund of Flanders (FWO) [grant no. FWO G 0554 13N]. DP Cook also has received an FWO scholarship [1 1Y67 16N].