Flu like symptoms score by time from enrollment to vitamin D supplementation. FLS were assessed by monthly phone interviews. Patients rated the extent of FLS on a Likert scale (a total FLS score ranging from 0 to 35). No significant change in FLS severity was noted in both dosage groups.
Golan et al. BMC Neurology 2013 13:60 doi:10.1186/1471-2377-13-60