1. Departments of Internal Medicine Universidade Federal de Minas Gerais
2. Fundação Hemominas, Minas Gerais State Centre of Haematology and Haemotherapy
3. Departments of Ophthalmology Universidade Federal de Minas Gerais
4. Departments of Preventive and Social Medicine, Universidade Federal de Minas Gerais
5. Sarah Kubstichek Hospital, Brazil