Skin β-endorphin mediates addiction to UV light
Cell (2014) - Comment
pubmed: 24949966  doi: 10.1016/j.cell.2014.04.032  issn: 1097-4172  issn: 0092-8674 

Gillian L. Fell, Kathleen C. Robinson, Jianren Mao, Clifford J. Woolf, David E. Fisher