1. Department of Dermatology; American University of Beirut; Beirut Lebanon
2. Private Practice; Chehim Lebanon
3. American University of Beirut; Beirut Lebanon
4. Faculty of Medicine, Department of Anatomy, Cell Biology and Physiological Sciences; American University of Beirut; Beirut Lebanon
5. Department of Biochemistry and Molecular Genetics; American University of Beirut; Beirut Lebanon
6. Department of Dermatology; Columbia University; New York New York