Funding for this research was provided by:
Medical Research Council (MC_UU_12015/5)
National Institute for Health Research (IS-BRC-1215-20014)
Received: 21 April 2020
Accepted: 6 October 2020
First Online: 21 October 2020
: H.S. and J.I.O. are employed by Mars, Inc., a company engaged in flavanol research and flavanol-related commercial activities. G.G.C.K. has received an unrestricted research grant from Mars, Inc. None of the other authors has a conflict of interest to declare.