%0 Journal Article %T A randomized, controlled pilot study of the effects of vitamin D supplementation on balance in Parkinson's disease: Does age matter? %A Amie L. Hiller %A Brenna M Lobb %A Charles F Murchison %A Joseph F Quinn %A Morgan O¡¯Connor %A Susan O¡¯Connor %J Archive of "PLoS ONE". %D 2018 %R 10.1371/journal.pone.0203637 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6157857/