Graduate Program in Health Sciences, School of Medicine, Federal University of Uberlândia, MG, Brazil; Clinical University Hospital, Federal University of Uberlândia, MG, Brazil. Clinical University Hospital, Federal University of Uberlândia, MG, Brazil; Department of Internal Medicine, School of Medicine, Federal University of Uberlândia, MG, Brazil. Graduate Program in Health Sciences, School of Medicine, Federal University of Uberlândia, MG, Brazil; Clinical University Hospital, Federal University of Uberlândia, MG, Brazil; Department of Internal Medicine, School of Medicine, Federal University of Uberlândia, MG, Brazil. Electronic address: daureas@ufu.br.