[1] Harvard Univ, Massachusetts Eye & Ear Infirm, Sch Med,Dept Ophthalmol, Ocular Immunol & Uveitis Serv, Boston, MA 02114 USA
[2] Harvard Univ, Massachusetts Eye & Ear Infirm, Sch Med, Dept Microbiol, Boston, MA 02114 USA
[3] Harvard Univ, Massachusetts Eye & Ear Infirm, Sch Med, Infect Dis Serv, Boston, MA 02114 USA