1. Cornea Clinic, Ophthalmology Service, Centro Medico Docente La Trinidad, Caracas, Venezuela;
2. Ophthalmic Research and Telemedicine Section, Ophthalmology and Optometry Mercy Clinic, Caracas, Venezuela;
3. Tropical Diseases Research Centre, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
4. Section of Microbiology and Molecular Biology, Clinical Laboratory, Centro Medico Docente La Trinidad Caracas, Venezuela;
5. Department of Parasitology, Faculty of Health Sciences, Universidad de Carabobo, Valencia, Venezuela;