Cheng Lily S, Mulgrew Kirk, Lin Steven, Idriss Nayla, Eisen Daniel B, Fung Maxwell A, Armstrong April W
Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, USA.
Am J Med. 2010 Sep;123(9):802-4. doi: 10.1016/j.amjmed.2010.05.002.