[1] Vrije Univ Amsterdam Med Ctr, Dept Ophthalmol, NL-1007 MB Amsterdam, Netherlands
[2] Vrije Univ Amsterdam Med Ctr, EMGO Inst, NL-1007 MB Amsterdam, Netherlands
[3] Vrije Univ Amsterdam, Dept Hlth Sci, Amsterdam, Netherlands
[4] Netherlands Canc Inst, Dept Epidemiol, Amsterdam, Netherlands