[1] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Stein Eye Inst, Div Orbital & Ophthalm Plast Surg, Los Angeles, CA USA
[3] Northeast Ohio Med Univ, Rootstown, OH USA
[4] Univ Calif Los Angeles, Doheny Eye Ctr, Div Orbital & Ophthalm Plast Surg, Los Angeles, CA USA