The Mystery of the Christmas Tree.

@article{Burgdorf2016TheMO,
  title={The Mystery of the Christmas Tree.},
  author={Walter H. C. Burgdorf and Gerd Plewig and Dan Lipsker and Leonard J Hoenig},
  journal={JAMA dermatology},
  year={2016},
  volume={152 12},
  pages={
          1405
        }
}