[1] Brigham & Womens Hosp, Div Infect Dis, 75 Francis St, Boston, MA 02115 USA
[2] Brigham & Womens Hosp, Dept Internal Med, 75 Francis St, Boston, MA 02115 USA
[3] Univ Calif San Francisco, Med Ctr, Dept Internal Med, San Francisco, CA USA
[4] Massachusetts Eye & Ear Infirm, Dept Ophthalmol, Boston, MA 02114 USA
[5] Brigham & Womens Hosp, Dept Pathol, 75 Francis St, Boston, MA 02115 USA
[6] Beetham Eye Inst, Joslin Diabet Ctr, Dept Ophthalmol, Boston, MA USA