[There are other sources without the RETRACTED overlay](https://www.researchgate.net/publication/257045368_Do_pigmentation_and_the_melanocortin_system_modulate_aggression_and_sexuality_in_humans_as_they_do_in_other_animals) Just search: "Do pigmentation and the melanocortin system modulate aggression and sexualityin humans as they do in other animals" I have it downloaded because, of course, this was inevitable.