Nicolas Marie Eleanore O, Krause Patricia K, Gibson Lawrence E, Murray Joseph A
Department of Dermatology and the Division of Gastroenterology and Hepatology and Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA.
Int J Dermatol. 2003 Aug;42(8):588-600. doi: 10.1046/j.1365-4362.2003.01804.x.