[1] George Washington Univ, Sch Med, Washington, DC 20052 USA
[2] Temple Univ, Sch Med, Philadelphia, PA 19122 USA
[3] Prob Med Res, Waterloo, ON, Canada
[4] Ortho Dermatol, Bridgewater, MA USA
[5] Dow Pharmaceut Sci, Petaluma, CA USA
[6] Valeant Pharmaceut North Amer, Bridgewater, MA USA