1. Department of Internal MedicinePostgraduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, RN, Brazil
2. Department of StatisticsFederal University of Rio Grande do Norte, Natal, RN, Brazil
3. Department of PhysiotherapyFederal University of Rio Grande do Norte, Natal, RN, Brazil
4. Department of Clinical and Toxicological AnalysesFederal University of Rio Grande do Norte, Natal, RN, Brazil
5. Department of Internal MedicineFederal University of Rio Grande do Norte, Natal, Brazil