0549 Prevalence and Impact of Muscle Cramps in Patients with Restless Legs-V45IS1 0549 Prevalence and Impact of Muscle Cramps in Patients with Restless Legs-V45IS1 Download 0548 Behavioral Validation of the University of Michigan REM Behavior Disorder Questionnaire in the Synucleinopathies-V45IS1 0550 Health-Economic Implications of Defined Improvements in Restless Leg Syndrome Severity: A Model-Based Exploratory Analysis based on Prior Publication Data-V45IS1