, and that this advantage is already visible a few years after the switch. It corroborates the conclusions from a series of previous studies on OA flipping....Whether this citation advantage also occurs in relation to non-OA journals in general, excluding hybrid OA serials, remains to be assessed in a follow-up study....[We found] no statistically significant evidence that journals switching to OA increase their publication output faster than non Gold-OA journals do. Therefore, there is no solid evidence for an 