Variation in the β-endorphin, oxytocin, and dopamine receptor genes is associated with different dimensions of human sociality
Proceedings of the National Academy of Sciences (2017) - Comments
pubmed: 28461468  doi: 10.1073/pnas.1700712114  issn: 1091-6490  issn: 0027-8424 

Eiluned Pearce, Rafael Wlodarski, Anna Machin, Robin I. M. Dunbar