1 Department of Ophthalmology, Medical School, State University of Sao Paulo, Botucatu, SP 18618-970, Brazil.
2 Department of Pathology, Medical School, State University of Sao Paulo, Botucatu, SP, Brazil.
3 Department of Ophthalmology, Medical School, State University of Sao Paulo, Botucatu, SP 18618-970, Brazil. Electronic address: sschellini@gmail.com.