Impact of volunteer-related and methodology-related factors on the reproducibility of brachial artery flow-mediated vasodilation: Analysis of 672 individual repeated measurements - van Mil, A C; Greyling, A; Zock, P L; Geleijnse, J M; Hopman, M T; Mensink, R P; Reesink, K D; Green, D J; Ghiadoni, L; Thijssen, D H (J Hypertens, 2016)