Fig. 3

Nalmefene co-authorship researcher networks. Each circle represents one author (larger diameter indicates a larger number of publication by this author) and each line connecting two authors indicates the presence of at least one publication they have co-authored (larger diameter indicates a larger number of publication in common). As indicated in the figure, the colours of the circles indicate conflict of interest (COIs) declared in the considered papers, and the colour of the outline indicates the authors’ views about the drug. All analyses were performed using the igraph library in R. All identified references were included excepted four references with no authors listed