[1] CHILDRENS HOSP MED CTR, SURG RES LAB, BOSTON, MA 02115 USA
[2] MASSACHUSETTS EYE & EAR INFIRM, GLAUCOMA CONSULTAT SERV, BOSTON, MA 02114 USA
[3] HARVARD UNIV, SCH MED, DEPT SURG, BOSTON, MA 02115 USA
[4] HARVARD UNIV, SCH MED, DEPT PATHOL, BOSTON, MA 02115 USA
[5] HARVARD UNIV, SCH MED, DEPT OPHTHALMOL, BOSTON, MA 02115 USA