Papillon-Lefèvre Syndrome: A Series of Six Cases in the Same Family. - Valeshabad, Ali Kord; Mazidi, Abdolmotaleb; Valeshabad, Reza Kord; Imani, Elham; Kord, Hadi; Koohkan, Mohammad; Sayinar, Zrynal; Al-Talib, Khalil (ISRN Dermatology, 2012)