Author Contributions: Dr Foppa had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Foppa, Schneider de Araujo, Macari, Reichert, and Goldim. Acquisition of data: Schneider de Araujo, Macari, and Reichert. Analysis and interpretation of data: Foppa. Drafting of the manuscript: Foppa. Critical revision of the manuscript for important intellectual content: Schneider de Araujo, Macari, Reichert, and Goldim. Statistical analysis: Foppa. Obtained funding: Foppa. Administrative, technical, and material support: Schneider de Araujo, Macari, and Reichert. Study supervision: Foppa and Goldim.
Financial Disclosure: None reported.
Funding/Support: This study was supported by an unrestricted grant from FIPE/HCPA (Hospital de Clinicas de Porto Alegre Institutional Research Fund).