title: Tests for early diagnosis of cardiovascular autonomic neuropathy: critical analysis and relevance.
authors.affiliation: Department of Internal Medicine, Discipline of Endocrinology, Diabetes Center, Universidade Federal de São Paulo , São Paulo , Brazil.
authors.forename: Luiz Clemente
authors.initials: LC
authors.lastname: Rolim
authors.forename: José Sérgio Tomaz
authors.initials: JS
authors.lastname: de Souza
authors.forename: Sérgio Atala
authors.initials: SA
authors.lastname: Dib
keywords: cardiac function tests; diabetic autonomic neuropathy; diabetic complications; early diagnosis; heart rate variability