A well-conducted multicenter study needs to assure standardization, uniformity of procedures, high data quality, and collaboration across sites. This manuscript describes the organization and dynamics of multicenter studies, ...

Autosomal recessive cerebellar ataxias (ARCAs) comprisecomplex genetic ataxia disorders with variable central andperipheral nervous system involvement and systemic changes.They can overlap with other conditions such as ...

Background: Evans syndrome (ES) in childhood-onset systemic lupus erythematosus (cSLE) patients has been rarely reported and limited to small populations. Procedures: A retrospective multicenter cohort study (Brazilian ...